Draft Message Disappears When Switching Between Copilot Chat Tabs After Another Chat Completes

[vovakadylo]

Type: Bug

Open Copilot Chat.
Move Copilot Chat to the editor area.
In the editor area, I have 3 tabs: Copilot Chat 1, Copilot Chat 2, and a text file.
Active tab: Copilot Chat 2
Copilot Chat 1 is doing something while I am writing a message in Copilot Chat 2 — not sending it, just typing.
Copilot Chat 1 gets the result.
Active tab: Copilot Chat 1
I react to the result in Copilot Chat 1 and switch back to Copilot Chat 2.
Active tab: Copilot Chat 2
The message disappears.

VS Code version: Code 1.118.1 (034f571, 2026-04-29T17:36:44+03:00)
OS version: Windows_NT x64 10.0.26200
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i9-14900HX (32 x 2419)
GPU Status	2d_canvas: enabled GPU0: VENDOR= 0x10de, DEVICE=0x2860 [NVIDIA GeForce RTX 4070 Laptop GPU], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.7700 ACTIVE GPU1: VENDOR= 0x8086, DEVICE=0xa788 [Intel(R) UHD Graphics], DRIVER_VERSION=32.0.101.6881 GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.8246 Machine model name: Machine model version: direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	31.73GB (16.12GB free)
Process Argv	--crash-reporter-id 233679f0-65d1-4dd6-868e-d6189a1c6cf1
Screen Reader	no
VM	0%

Extensions: none

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[justschen]

just to confirm, is it that the request disappears, or the entire response as well also disappears?

[vovakadylo]

just to confirm, is it that the request disappears, or the entire response as well also disappears?

Only unfinished message disappears