Atlassian conneect fails since upgrading VS Code

Type: Bug

"Every Atlassian MCP tool call (and some other MCP/action tool calls) fails immediately with a generic client-side error 'n is not iterable', reproducible across SSE and HTTP transports, after fresh re-authentication, with zero-argument calls and simple calls alike. Read-only file tools work fine; write/execute-type tools intermittently fail the same way."

Extension version: 0.38.2
VS Code version: Code 1.110.1 (61b3d0ab13be7dda2389f1d3e60a119c7f660cc3, 2026-03-06T23:03:27.520Z)
OS version: Windows_NT x64 10.0.26100
Modes:

Logs

Info: ccreq:4cca3eb1.copilotmd | success | claude-sonnet-5 | 2292ms | [panel/editAgent]

Trace: Resolving chat model

Trace: Resolved chat model

Debug: AgentIntent: rendering with budget=151074 (baseBudget: 199997, toolTokens: 22262), summarizationEnabled=true

Error: Error from tool run_vscode_command with args {"commandId": "workbench.action.openIssueReporter", "name": "Report Issue"}: n is not iterable: TypeError: n is not iterable

    at new fFe (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:3284:80437)

    at a._createInstance (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:1834:1997)

    at a.createInstance (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:1834:1437)

    at oo.executor (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:3284:78962)

    at get value (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:405:48032)

    at gFe.checkAutoConfirmation (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:3284:79904)

    at vFe.getPreConfirmAction (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:3284:81771)

    at RA.shouldAutoConfirm (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:3293:5147)

    at RA.resolveAutoConfirmFromHook (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:3293:405)

    at RA.invokeTool (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:3288:10929)

    at async PEt.$invokeTool (vscode-file://vscode-app/c:/Users/Administrator/AppData/Local/Programs/Microsoft%20VS%20Code/61b3d0ab13/resources/app/out/vs/workbench/workbench.desktop.main.js:936:31182)

Trace: Resolving chat model

Trace: Resolved chat model

Trace: Resolving chat model

Trace: Resolved chat model

Trace: Resolving chat model

Trace: Resolved chat model

Trace: Built prompt

Trace: Sending prompt to model

Debug: [PowerService] Acquired power save blocker, active count: 1

Debug: modelMaxPromptTokens 199997

Debug: modelMaxResponseTokens 64000

Debug: chat model claude-sonnet-5

Debug: GH request id: AC59:7A765:A4DF07:B2640D:6A9851A9

Debug: request.response: [{"type":"ChatMessages"}], took 856 ms

Debug: [PowerService] Released power save blocker acquisition, active count: 0

Debug: [PowerService] Scheduling power save blocker release in 120000ms

Trace: [messagesAPI]SSE: {"message":{"content":[],"id":"msg_011Ceewmra5FnrioAzG11XUe","model":"claude-sonnet-5","role":"assistant","stop_details":null,"stop_reason":null,"stop_sequence":null,"type":"message","usage":{"cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":162},"cache_creation_input_tokens":162,"cache_read_input_tokens":92370,"inference_geo":"global","input_tokens":2,"output_tokens":1}},"type":"message_start"}

Trace: [messagesAPI]SSE: {"content_block":{"text":"","type":"text"},"index":0,"type":"content_block_start"}

Trace: [messagesAPI]SSE: {"type":"ping"}

Trace: [messagesAPI]SSE: {"delta":{"text":"That","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":" command failed too, consistent with the same tool-execution problem affecting all action-type tools right now (not just","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":" Atlassian). I can't reliably trigger the issue reporter from here.\n\nYou can open it yourself instead:\n1. Command Palette (Ctrl+Shift+P) → run **","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":"Help: Report Issue** (or **Report Issue**).\n2. Choose product **GitHub Copilot Chat** (or **Copilot**) as the affected extension.\n3. Describe:","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":" *\"Every Atlassian MCP tool call (and some other MCP/action tool calls) fails immediately with a generic client-","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":"side error 'n is not iterable', reproducible across SSE and HTTP transports, after fresh re-authentication, with zero-argument calls and simple calls alike. Read","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":"-only file tools work fine; write/execute-type tools intermittently fail the same way.\"*\n4. Attach/include the log line","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":" you shared earlier if it lets you: `Discovered authorization server metadata... Discovered 31 tools`","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":" followed by the tool-call failures.\n\nThat gives the VS Code/Copilot team the cl","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":"earest repro signal. Once this is fixed on their end, I can pick back up on fetching CSD-10","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"delta":{"text":"077's subtasks — or in the meantime, if you paste the subtask list from Jira, I can work with it right away.","type":"text_delta"},"index":0,"type":"content_block_delta"}

Trace: [messagesAPI]SSE: {"index":0,"type":"content_block_stop"}

Trace: [messagesAPI]SSE: {"copilot_usage":{"token_details":[{"batch_size":1000000,"cost_per_batch":200000000000,"model":"claude-sonnet-5","token_count":2,"token_type":"input"},{"batch_size":1000000,"cost_per_batch":20000000000,"model":"claude-sonnet-5","token_count":92370,"token_type":"cache_read"},{"batch_size":1000000,"cost_per_batch":250000000000,"model":"claude-sonnet-5","token_count":162,"token_type":"cache_write"},{"batch_size":1000000,"cost_per_batch":1000000000000,"model":"claude-sonnet-5","token_count":422,"token_type":"output"}],"total_nano_aiu":2310300000},"delta":{"stop_details":null,"stop_reason":"end_turn","stop_sequence":null},"type":"message_delta","usage":{"cache_creation_input_tokens":162,"cache_read_input_tokens":92370,"input_tokens":2,"output_tokens":422,"output_tokens_details":{"thinking_tokens":0}}}

Trace: [messagesAPI]SSE: {"type":"message_stop"}

Info: [messagesAPI] message 0 returned. finish reason: [stop]

Trace: [messagesAPI]SSE: [DONE]

Info: ccreq:61417bd5.copilotmd | success | claude-sonnet-5 | 6421ms | [panel/editAgent]

Info: [ToolCallingLoop] Stop hook result: shouldContinue=false, reasons=undefined

Trace: Resolving chat model

Trace: Resolved chat model

Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms

Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms

Debug: Embeddings for commandEmbeddings calculated in 2393ms

Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.

Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.

Trace: [CLISessionItemProvider] provideChatSessionItems: 0 session(s) to convert

Request IDs

2adda59d-df15-4780-b378-f8f29e3d902a

703e3f69-c788-4533-9ddf-14a1bdd7b185

f0123748-3075-4661-b52e-7f942e68a6f1

c7240995-0955-4ca7-ad38-ae82126fa0ef

e4429044-736f-4e01-921c-7dbb1d400403

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Xeon(R) Platinum 8175M CPU @ 2.50GHz (4 x 2500)|
|GPU Status|2d_canvas: unavailable_software
GPU0: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VENDOR=Google, DRIVER_VERSION=10.0.26100.33158
GPU1: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.33158
GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.33158
Machine model name:
Machine model version:
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: disabled_software
multiple_raster_threads: enabled_on
opengl: disabled_off
rasterization: disabled_software
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: disabled_software
video_encode: disabled_software
webgl: unavailable_software
webgl2: unavailable_software
webgpu: unavailable_software
webnn: unavailable_software|
|Load (avg)|undefined|
|Memory (System)|15.70GB (2.60GB free)|
|Process Argv|--crash-reporter-id db8a6a5e-e95e-445e-8f84-49bf6606a568|
|Screen Reader|no|
|VM|0%|

A/B Experiments

```
vsliv368:30146709
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
b6b4d950:31327385
envsactivate1:31551504
478i5457:31544283
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ec5jj548:31422691
aggr-medium-prod-1:31569101
cp_cls_t_966_ss:31526232
4je02754:31466945
c3h7c220:31478652
ge8j1254_inline_auto_hint_haiku:31490510
cp_cls_t_1081:31454832
conptydll_true:31498968
e9c30283:31461165
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
23c7c724:31520045
ddid_t:31478206
cp_cls_t_1082:31535311
j0d79568:31499440
jb_cp_cls_t_632:31543129
748c7209:31512887
ha629193:31508444
jbcp_cls_pctr_t:31531130
cp_intellij_t_nes:31548657
d7b18187:31526828
ihg5j128:31534457
9gg7f176:31542112
1h923230:31564177
0dg73464:31554319
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
5b8j3302:31564601
mangle-name-treatment:31572634

```