Operating Systems Good First Issues

Browse open source issues grouped under Operating Systems. Where the subject goes by older names in the issue metadata, those are matched too.

Operating Systems

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Average annotated difficulty: 4.1/5 across 913 issues.
3% of 913 time estimates are one day or less.

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[BUG] /stats Ctrl+S screenshot copy always fails on WSL2 — platform string is "wsl", the xclip branch added in #54695 only matches "linux" Open

area:tui bug has repro platform:wsl

anthropics/claude-code#89097 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Bug Report: Windows installer fails with AddPackage 0x80073CF6 / 0x80073CF9 when a leftover CoworkVMService exists, and the bootstrapper cannot remove it (Access denied) but continues anyway Open

area:cowork area:installation bug platform:windows

anthropics/claude-code#89108 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Claude in Chrome: no background-tab option — every tool call steals OS focus (regression ~2026-03-25) Open

area:chrome bug platform:windows

anthropics/claude-code#89148 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Scheduled-task session processes still leak on 2.1.237 — and each orphan spins ~10% of a core indefinitely (follow-up to #54626) Open

area:core bug has repro perf:cpu perf:memory platform:macos

anthropics/claude-code#89205 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Linux desktop: local scheduled tasks never auto-fire — dispatch blocked by "VM not supported (linux/x64)" (manual Run now works) Open

area:cowork area:desktop bug has repro platform:linux

anthropics/claude-code#89213 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] WSL/WSLg: image paste fails because wl-paste returns BMP into a .png path Open

area:tui bug platform:linux platform:wsl

anthropics/claude-code#89223 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Backend busy-polls at ~266k syscalls/sec with zero file I/O, holding 1.1 cores per process indefinitely (Windows, 2.1.234) Open

area:mcp area:plugins bug perf:cpu platform:windows

anthropics/claude-code#89255 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
MSIX repair loop left the app unopenable; surfaced two standing defects — CoworkVMService cannot arm SCM recovery (31/60 days), and app logging silently died 4 days ago Open

area:cowork area:desktop bug has repro platform:windows

anthropics/claude-code#89266 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Headless claude -p deadlocks in uninterruptible openat on macOS; interactive sessions unaffected Open

area:cli area:core bug has repro platform:macos

anthropics/claude-code#89272 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Desktop app creates duplicate project directories for UNC cwd (trailing-separator normalization), causing daily chat-history loss Open

area:core area:desktop bug data-loss has repro platform:windows

anthropics/claude-code#89283 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Windows: `claude auth login` / OAuth browser doesn't open automatically in Git Bash — no fallback to cmd.exe /c start (regression since 2.1.141) Open

bug

anthropics/claude-code#89284 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] terminal shows 'done working' on /btw question Open

area:tui bug platform:windows

anthropics/claude-code#89294 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Scratchpad/temp files accumulate without cleanup (Claude Code and Cowork) until the host OS freezes and requires a hard power-off Open

area:cowork bug platform:windows

anthropics/claude-code#89296 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] System directive causes CRLF line endings in markdown files on Windows despite project LF convention Open

area:tools bug platform:windows

anthropics/claude-code#89307 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] v2.1.242 segfaults on every launch (even `--version`) — interposed mimalloc `free` has no NULL check, glibc `newlocale` calls `free(NULL)` pre-main; v2.1.241 unaffected Open

area:packaging bug has repro platform:linux regression

anthropics/claude-code#89334 · 16 comments · 11 reactions · 0 assignees · Indexed Sep 14, 2026
Deterministic SIGSEGV on claude CLI startup (free/__newlocale/pthread_once) Open

area:core area:packaging bug has repro platform:linux

anthropics/claude-code#89366 · 7 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] terminated by signal SIGSEGV (Address boundary error) Open

area:packaging bug has repro platform:linux

anthropics/claude-code#89367 · 5 comments · 5 reactions · 0 assignees · Indexed Sep 14, 2026
2.1.243 native build segfaults instantly on startup: interposed free() crashes on free(NULL) from glibc 2.44 newlocale Open

area:core area:packaging duplicate has repro platform:linux regression

anthropics/claude-code#89369 · 3 comments · 13 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Native installer (2.1.243) segfaults in newlocale/free during startup on glibc 2.44 (CachyOS) Open

area:packaging bug has repro platform:linux regression

anthropics/claude-code#89371 · 8 comments · 8 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Segmentation fault (SIGSEGV) on install and startup — CachyOS Linux Open

area:core area:installation bug duplicate platform:linux regression

anthropics/claude-code#89377 · 8 comments · 6 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Claude execution interrupted Open

area:plugins area:tui bug platform:windows

anthropics/claude-code#89383 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Claude Code 2.1.243 immediately segfaults on Arch Linux x86_64 Open

bug

anthropics/claude-code#89393 · 11 comments · 10 reactions · 0 assignees · Indexed Sep 14, 2026
Claude Code 2.1.243 segfaults on startup — glibc 2.44 / Arch Linux (mimalloc/newlocale allocator conflict) Open

area:packaging duplicate has repro platform:linux regression

anthropics/claude-code#89394 · 5 comments · 14 reactions · 0 assignees · Indexed Sep 14, 2026
Native linux-x64 binary segfaults on Arch Linux (glibc 2.44) — free() called from libc newlocale() crashes with NULL table pointer Open

area:packaging duplicate has repro platform:linux platform:wsl

anthropics/claude-code#89399 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Version 2.1.243 fails to launch on multiple machines, autoupdate causes regression Open

area:packaging bug platform:linux regression

anthropics/claude-code#89408 · 6 comments · 5 reactions · 0 assignees · Indexed Sep 14, 2026
SIGSEGV crash on startup with kernel 7.1.x (CachyOS) — versions >= 2.1.140 Open

area:packaging duplicate platform:linux regression

anthropics/claude-code#89414 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Segfault regression at 2.1.242 on glibc 2.44 (Arch) — distinct from closed #62747 Open

area:core area:packaging duplicate has repro platform:linux regression

anthropics/claude-code#89415 · 9 comments · 9 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] v2.1.243 native binary segfaults on startup — NULL deref in free() called from __newlocale Open

area:core area:packaging duplicate has repro platform:linux regression

anthropics/claude-code#89419 · 2 comments · 6 reactions · 0 assignees · Indexed Sep 14, 2026
2.1.242+ segfault is glibc-2.44-only: bisected 2.35→2.44, glibc 2.44's __newlocale refactor added an unconditional free(NULL); simulating a NULL guard boots 2.1.243 cleanly Open

area:packaging duplicate has repro platform:linux regression

anthropics/claude-code#89420 · 0 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
SIGSEGV on startup in v2.1.242+ on Linux (glibc 2.44, x86-64) Open

area:core bug duplicate platform:linux regression

anthropics/claude-code#89421 · 5 comments · 6 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Native build 2.1.243 segfaults on glibc 2.44 due to malloc/free symbol interposition Open

area:packaging bug duplicate platform:linux regression

anthropics/claude-code#89427 · 3 comments · 11 reactions · 0 assignees · Indexed Sep 14, 2026
Windows: app window is always-on-top with no way to disable it Open

area:desktop bug has repro platform:windows

anthropics/claude-code#89467 · 28 comments · 56 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Bash sandbox (bwrap) fails intermittently with different errors each run on WSL2 + Docker Engine — race condition, not a permissions issue Open

area:sandbox bug has repro platform:wsl

anthropics/claude-code#89514 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
2.1.243 SIGSEGV on startup (glibc 2.44, Arch) — self-heal to 2.1.241 worked, adding correlated repro Open

area:core area:packaging duplicate has repro platform:linux

anthropics/claude-code#89523 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Windows Desktop destroys its own crash evidence — and the first GPU-process dump shows D3D12Core raising a non-continuable fail-fast (0x060C201E) Open

area:desktop bug has repro platform:windows

anthropics/claude-code#89525 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Windows Desktop app: "+New > Local" session spawns via SSH into WSL instead of native Windows, so the browser pane never appears Open

area:desktop bug platform:windows platform:wsl

anthropics/claude-code#89527 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Claude Code 2.1.243 segfaults on startup in __newlocale on glibc 2.44 (Bun/mimalloc build) Open

area:core area:packaging bug duplicate has repro platform:linux regression

anthropics/claude-code#89536 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`claude -p` deadlocks at startup under launchd on 2.1.243 (2.1.241/2.1.240 fine) — stalls at `[STARTUP] Loading commands and agents`, 0% CPU, SIGTERM-immune; `SHELL=/bin/sh` (#78903) does not help Open

area:core bug has repro platform:macos regression

anthropics/claude-code#89537 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Recurring Bun-runtime SIGABRT/SIGSEGV crashes across Claude Code 2.1.231-2.1.243 on Linux ARM64 (glibc 2.34) — clustered multi-process crashes, corrupted stack frame evidence Open

area:core bug platform:linux

anthropics/claude-code#89539 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Missing wake notification handler causes stale socket connections after system sleep Open

area:networking bug platform:macos

anthropics/claude-code#89545 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Bug] Cybersecurity safeguard blocks local ethernet network queries Open

area:model area:security bug platform:linux

anthropics/claude-code#89550 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
C:/Program Files/Git/desktop always reports "not installed" on Windows even when Claude Desktop is installed (reg.exe arg escaping bug) Open

area:desktop bug has repro platform:windows

anthropics/claude-code#89553 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
2.1.243 native build segfaults at startup on Arch Linux (glibc 2.44) — even `--version` and `claude update` Open

area:packaging bug has repro platform:linux

anthropics/claude-code#89564 · 0 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Windows/Git Bash: 85 per-function base64 evals make every Bash call pay ~5-9s; snapshot-creation 10s timeout silently forks sessions into fast/slow regimes Open

area:bash bug has repro platform:windows

anthropics/claude-code#89580 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] [BUG] Claude Desktop MSIX package repeatedly enters Modified, NeedsRemediation after opening additional Cowork sessions; installer cannot repair it (0x80073CFA → 0x80073CF9) Open

area:cowork area:desktop area:installation bug has repro platform:windows

anthropics/claude-code#89585 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Windows: MCP shell/filesystem tool calls intermittently not dispatched or silently not executed - stdout returns null on success, writes report success but never land, web-to-Desktop bridge logs side_channel_waiting_key_absent Open

invalid

anthropics/claude-code#89590 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Claude Code desktop app (Windows MSIX): idle stealth update quits app, child process survives, register fails 0x80073D02, app unlaunchable until hidden process is killed Open

area:desktop bug has repro platform:windows

anthropics/claude-code#89599 · 11 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
macOS: background Bash tasks orphaned at PID 1 with their .output files already unlinked — 30 spinning shells held 7.6/10 cores for 25h (2.1.245) Open

area:bash bug platform:macos

anthropics/claude-code#89625 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] claude install and claude doctor hang indefinitely at ~100% CPU (Proxmox/QEMU VM) Open

area:cli area:installation bug has repro platform:linux

anthropics/claude-code#89627 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[BUG] Windows MSIX: orphaned Claude.exe helper locks the executable across relaunch/quit (root cause + fix for #42776) Open

area:desktop bug has repro platform:windows

anthropics/claude-code#89648 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

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Operating Systems Good First Issues

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