Invalid key name: in opencode mini and various characters

Description

When switching windows in tmux, after switching back to a terminal running opencode, I see a stacktrace and various characters typed in into the input window.

Plugins

none

OpenCode version

1.18.18

Steps to reproduce

1. Start tmux
2. Start opencode or opencode --mini
3. Type prefix+s , typically ctrl+b+s in tmux to open tmux session switcher
4. Switch to the same window
5. Observe the error

Screenshot and/or share link

The following error in the logs is repeated like 100s times:

$ opencode --mini

█▀▀█  OpenCode
█  █  ~/myprojects/L_builtin
▀▀▀▀

000/0000[event-match-resolver-error] [Keymap] Error in event match resolver: 2 | import{Ab as Z0,Bb as XQ,zb as Q0}from"/$bunfs/root/chunk-g47at4xx.js";import{Gb as dZ,Hb as $Q,Ib as GQ,gc as aZ,hc as tZ,jc as eZ,nc as J0}from"/$bunfs/root/chunk-6ks53mkg.js";import{wc as nZ}from"/$bunfs/root/chunk-g290w9zp.js";import{tg as vQ}from"/$bunfs/root/chunk-dtfbyghv.js";import{XT as NQ}from"/$bunfs/root/chunk-fpne6rrn.js";var S2={};NQ(S2,{registerUnresolvedCommandWarnings:()=>mZ,registerTimedLeader:()=>QQ,registerTextareaMappingSuspension:()=>iZ,registerNeovimDisambiguation:()=>lZ,registerModBindings:()=>yZ,registerMetadataFields:()=>vZ,registerManagedTextareaLayer:()=>pQ,registerLeader:()=>gQ,registerExCommands:()=>fZ,registerEscapeClearsPendingSequence:()=>JQ,registerEnabledFields:()=>hZ,registerEmacsBindings:()=>xZ,registerEditBufferCommands:()=>rZ,registerDefaultKeys:()=>SZ,registerDefaultEventMatchResolver:()=>fQ,registerDefaultBindingParser:()=>kQ,registerDeadBindingWarnings:()=>bZ,registerCommaBindings:()=>eJ,registerBindingOverrides:()=>NZ,registerBaseLayoutFallback:()=>yQ,registerBackspa | ... truncated

error: Invalid key name: key name cannot be empty
      at X0 (/$bunfs/root/chunk-shrt7wh3.js:2:2135)
      at HQ (/$bunfs/root/chunk-shrt7wh3.js:2:2220)
      at uJ (/$bunfs/root/chunk-shrt7wh3.js:2:2457)
      at resolveKey (/$bunfs/root/chunk-shrt7wh3.js:2:44824)
      at xQ (/$bunfs/root/chunk-shrt7wh3.js:2:79445)
      at H (/$bunfs/root/chunk-shrt7wh3.js:2:55613)
      at wJ (/$bunfs/root/chunk-shrt7wh3.js:2:49357)
      at EJ (/$bunfs/root/chunk-shrt7wh3.js:2:48612)
      at <anonymous> (/$bunfs/root/chunk-shrt7wh3.js:2:70091)
      at emitWithPriority (/$bunfs/root/chunk-dtfbyghv.js:26:10165)
      at processParsedKey (/$bunfs/root/chunk-dtfbyghv.js:26:9634)
      at handleStdinEvent (/$bunfs/root/chunk-dtfbyghv.js:93:5055)
      at <anonymous> (/$bunfs/root/chunk-dtfbyghv.js:93:4924)
      at drain (/$bunfs/root/chunk-dtfbyghv.js:32:8396)
      at drainStdinParser (/$bunfs/root/chunk-dtfbyghv.js:93:4896)
      at <anonymous> (/$bunfs/root/chunk-dtfbyghv.js:93:2753)
      at emit (node:events:95:22)
      at addChunk (internal:streams/readable:264:47)
      at readableAddChunkPushByteMode (internal:streams/readable:242:18)
      at internalRead (38:40)

Operating System

Windows 11 -> wsl -> ubuntu 26.04 LTS -> tmux 3.6a , no tmux config

Terminal

Terminal Windows 1.24.11911.0,