Can't tab-complete suggestions

[jkoritzinsky]

Type: Bug

When I get GitHub Copilot suggestions (or suggestions from other extensions), I can't tab complete the suggestions. When pressing Tab, a tab character is emitted instead of the suggested completion.

VS Code version: Code 1.78.2 (b3e4e68, 2023-05-10T14:39:26.248Z)
OS version: Windows_NT x64 10.0.22621
Modes:
Sandboxed: No

System Info

Item	Value
CPUs	Intel(R) Xeon(R) W-2235 CPU @ 3.80GHz (12 x 3792)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off 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 video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	63.59GB (24.95GB free)
Process Argv	. --crash-reporter-id bd57884a-402c-49ef-ac40-f268ff95755d
Screen Reader	no
VM	0%

Extensions (71)

Extension	Author (truncated)	Version
github-markdown-preview	bie	0.3.0
markdown-checkbox	bie	0.4.0
markdown-emoji	bie	0.3.0
markdown-footnotes	bie	0.1.1
markdown-mermaid	bie	1.18.1
markdown-preview-github-styles	bie	2.0.2
markdown-yaml-preamble	bie	0.1.0
vscode-mocha	Com	0.1.1
doxdocgen	csc	1.4.0
vscode-markdownlint	Dav	0.50.0
vscode-eslint	dba	2.4.0
docs-article-templates	doc	1.0.0
docs-authoring-pack	doc	1.0.0
docs-build	doc	0.4.0
docs-images	doc	1.0.0
docs-markdown	doc	1.0.1
docs-preview	doc	1.0.1
docs-scaffolding	doc	0.0.16
docs-yaml	doc	1.0.0
xml	Dot	2.5.1
gitlens	eam	13.6.0
EditorConfig	Edi	0.16.4
html-preview-vscode	geo	0.2.5
copilot	Git	1.86.82
vscode-pull-request-github	Git	0.64.0
vscode-guid	hea	1.7.0
better-cpp-syntax	jef	1.17.2
dotnet-runtime-test-assistant	jko	0.0.2
cmake-language-support-vscode	jos	0.0.9
vscode-github-actions	me-	3.0.1
vscode-antlr4	mik	2.3.1
azure-pipelines	ms-	1.208.0
vscode-docker	ms-	1.25.0
csharp	ms-	1.25.7
vscode-dotnet-runtime	ms-	1.6.0
isort	ms-	2022.8.0
python	ms-	2023.8.0
vscode-pylance	ms-	2023.5.20
jupyter	ms-	2023.4.1011241018
jupyter-keymap	ms-	1.1.0
jupyter-renderers	ms-	1.0.15
vscode-jupyter-cell-tags	ms-	0.1.8
vscode-jupyter-slideshow	ms-	0.1.5
remote-containers	ms-	0.292.0
remote-ssh	ms-	0.102.0
remote-ssh-edit	ms-	0.86.0
remote-wsl	ms-	0.78.5
vscode-remote-extensionpack	ms-	0.24.0
azure-account	ms-	0.11.4
cmake-tools	ms-	1.14.31
cpptools	ms-	1.15.4
cpptools-extension-pack	ms-	1.3.0
hexeditor	ms-	1.9.11
live-server	ms-	0.4.8
powershell	ms-	2023.5.0
remote-explorer	ms-	0.4.0
remote-server	ms-	1.1.0
vs-keybindings	ms-	0.2.1
vscode-selfhost-test-provider	ms-	0.3.15
vsliveshare	ms-	1.0.5864
vsliveshare-pack	ms-	0.4.0
uuid-generator	net	0.0.5
vscode-xml	red	0.25.0
vscode-yaml	red	1.12.2
unique-window-colors	stu	1.0.51
ninja	sur	0.0.1
graphviz-interactive-preview	tin	0.3.5
msbuild-project-tools	tin	0.4.9
cmake	twx	0.0.17
vscode-lldb	vad	1.9.1
vscode-icons	vsc	12.4.0

(1 theme extensions excluded)

A/B Experiments

vsliv368:30146709
vsreu685:30147344
python383:30185418
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vsjup518:30340749
pythonptprofiler:30281270
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pythondataviewer:30285071
vscod805cf:30301675
binariesv615:30325510
bridge0708:30335490
bridge0723:30353136
cmake_vspar411:30581797
vsaa593cf:30376535
pythonvs932:30410667
cppdebug:30492333
vsclangdf:30486550
c4g48928:30535728
dsvsc012cf:30540253
pynewext54:30695312
azure-dev_surveyone:30548225
3biah626:30602489
pyind779:30671433
89544117:30613380
pythonsymbol12:30671437
showlangstatbar:30737416
azdwalk:30721579
pythonms35:30701012
pythonfmttext:30731395
fixshowwlkth:30730052
hidesbindicator:30730055
pythongtdpathcf:30739705

[jrieken]

/needsMoreInfo

/gifPlease

This issue lacks

• mentioning of the language and extension providing completions
• copy-paste friendly source code samples

[vscodenpa]

Thanks for reporting this issue! Unfortunately, it's hard for us to understand what issue you're seeing. Please help us out by providing a screen recording showing exactly what isn't working as expected. While we can work with most standard formats, .gif files are preferred as they are displayed inline on GitHub. You may find https://gifcap.dev helpful as a browser-based gif recording tool.

If the issue depends on keyboard input, you can help us by enabling screencast mode for the recording (Developer: Toggle Screencast Mode in the command palette). Lastly, please attach this file via the GitHub web interface as emailed responses will strip files out from the issue.

Happy coding!

[vscodenpa]

Thanks for creating this issue! We figured it's missing some basic information or in some other way doesn't follow our issue reporting guidelines. Please take the time to review these and update the issue.

Happy Coding!

[jkoritzinsky]

Here's a basic screencap of the issue:

[jkoritzinsky]

I'm hitting this issue in C# and Markdown. The suggestions come from GitHub Copilot.

This occurs for any Copilot suggestion on my machine.

[hediet]

Can you try with default settings and default keybindings and just the copilot extension enabled?

[Sukaato]

I have the same problem with autocomplete in Typescript, but I don't use Copilot or anything.

I have the default shortcut (CTRL + SPACE)

Version: 1.78.2 (user setup)
Commit: b3e4e68
Date: 2023-05-10T14:39:26.248Z
Electron: 22.5.2
Chromium: 108.0.5359.215
Node.js: 16.17.1
V8: 10.8.168.25-electron.0
OS: Windows_NT x64 10.0.22621
Sandboxed: Yes

[Alex-EEE]

Hi same problem in Python on macOS. If the suggestion widget is showing, then completing inline suggestions is actually greyed out, even when you hover it. So it's not an issue with keybindings WHATSOEVER. Somehow the suggestions widget is just flat out disabling inline suggestions.

[Sukaato]

After a few tests, the bug also appears in version 1.77.3.

On Windows 11:
Version: 1.77.3 (user setup)
Commit: 704ed70
Date: 2023-04-12T09:16:02.548Z
Electron: 19.1.11
Chromium: 102.0.5005.196
Node.js: 16.14.2
V8: 10.2.154.26-electron.0
OS: Windows_NT x64 10.0.22621
Sandboxed: Yes

On Laptop in Windows 10, the shortcut is functional:
Version: 1.77.3 (user setup)
Commit: 704ed70
Date: 2023-04-12T09:16:02.548Z
Electron: 19.1.11
Chromium: 102.0.5005.196
Node.js: 16.14.2
V8: 10.2.154.26-electron.0
OS: Windows_NT x64 10.0.19045
Sandboxed: Yes

On Laptop in Windows 11, the shortcut is functional:
Version: 1.78.2 (user setup)
Commit: b3e4e68
Date: 2023-05-10T14:39:26.248Z
Electron: 22.5.2
Chromium: 108.0.5359.215
Node.js: 16.17.1
V8: 10.8.168.25-electron.0
OS: Windows_NT x64 10.0.22621
Sandboxed: Yes

And after an update on my version in Windows 10, the bug doesn't appear.

I conclude that the bug occurs on Windows 11 when the computer isn't a laptop.

[Sukaato]

@jkoritzinsky @jrieken @hediet @Xenxia

After another test, I discovered that the shortcut was used by Peek in PowerToys.

@jkoritzinsky maybe you use PowerToys too.

[jkoritzinsky]

I figured out that in my case, this was a bad extension interaction between Copilot and learn-markdown. I'll leave the issue open as there are other reports in this issue. Feel free to close in the future.

[Alex-EEE]

Any tips to root out which extension is having the bad interaction @jkoritzinsky ? I don't have learn-markdown, but I do have a bunch of extensions, so guessing that's the issue

[jkoritzinsky]

Honestly I just went through my extension list and tried disabling the first markdown-related extension (as tab-complete was working in other language modes for me).

[hediet]

Closing because this seems to be an extension issue.