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Integrated terminal freezes when pasting plain text copied from LibreOffice on Linux #320220

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Integrated terminal freezes when pasting plain text copied from LibreOffice on Linux#320220
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deepak1556meganroggeanthonykim1
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bugIssue identified by VS Code Team member as probable bugfreeze-slow-crash-leakVS Code crashing, performance, freeze and memory leak issuesinfo-neededIssue requires more information from posterlinuxIssues with VS Code on LinuxterminalGeneral terminal issues that don't fall under another label

Description

@Iamliuxiaozhen
Oliver Lin (Iamliuxiaozhen)
opened on Jun 6, 2026

Does this issue occur when all extensions are disabled?: Yes/No

  • VS Code Version: 1.123.0
  • OS Version: Kubuntu 26.04 LTS

After updating VS Code, the integrated terminal freezes when pasting text copied from LibreOffice.

The paste target in LibreOffice was plain text, but the issue still occurs.
If the text contains line breaks, the freeze is 100% reproducible.
If I paste the same content into Kate and copy it again, VS Code no longer freezes.
Some single-line text copied from LibreOffice can also trigger the issue.

This only happens in the integrated terminal, not necessarily in the editor.

Activity

  1. vs-code-engineering
    added
    new release
    on Jun 6, 2026

  2. Iamliuxiaozhen commented on Jun 6, 2026

    @Iamliuxiaozhen
    Oliver Lin (Iamliuxiaozhen)
    on Jun 6, 2026
    Author

    Additional information:

    I have already set:

    "terminal.integrated.gpuAcceleration": "off"

  3. Iamliuxiaozhen commented on Jun 6, 2026

    @Iamliuxiaozhen
    Oliver Lin (Iamliuxiaozhen)
    on Jun 6, 2026
    Author

    After force-closing VS Code, KDE's crash reporter showed that VS Code generated a core dump.

    Signal: 5 (TRAP)
    Message: Process (code) dumped core.

    Image
  4. vs-code-engineering
    assigned
    Anthony Kim (anthonykim1)
    on Jun 6, 2026

  5. Iamliuxiaozhen commented on Jun 6, 2026

    @Iamliuxiaozhen
    Oliver Lin (Iamliuxiaozhen)
    on Jun 6, 2026
    Author

    I can reproduce this consistently. coredumpctl list code shows multiple crashes of /usr/share/code/code with SIGTRAP after reproducing the paste freeze. Most recent entries:

    • Sat 2026-06-06 18:17:18 CST, PID 93965, SIGTRAP
    • Sat 2026-06-06 18:18:18 CST, PID 131815, SIGTRAP
    • Sat 2026-06-06 18:29:43 CST, PID 136724, SIGTRAP

    So this is not just a UI hang; VS Code eventually dumps core.

  6. Iamliuxiaozhen commented on Jun 6, 2026

    @Iamliuxiaozhen
    Oliver Lin (Iamliuxiaozhen)
    on Jun 6, 2026
    Author

    There is no paste preview/confirmation. VS Code freezes immediately after pressing Ctrl+Shift+V in the integrated terminal.

  7. Iamliuxiaozhen commented on Jun 6, 2026

    @Iamliuxiaozhen
    Oliver Lin (Iamliuxiaozhen)
    on Jun 6, 2026
    Author

    I checked the clipboard types with wl-paste --list-types after copying the problematic text from LibreOffice. The clipboard contains multiple LibreOffice/rich text targets:

    application/x-openoffice-embed-source-xml;windows_formatname="Star Embed Source (XML)"
text/rtf
text/richtext
text/html
text/markdown
text/plain;charset=utf-16
application/x-openoffice-link;windows_formatname="Link"
application/x-openoffice-objectdescriptor-xml;windows_formatname="Star Object Descriptor (XML)";classname="8BC6B165-B1B2-4EDD-aa47-dae2ee689dd6";typename="LibreOffice 26.2 文本文档";viewaspect="1";width="17000";height="3000";posx="0";posy="0"
text/plain;charset=utf-8
text/plain

    After copying the same text through Kate first, the issue usually disappears, which likely means Kate normalizes the clipboard to simpler plain text targets.

  8. Iamliuxiaozhen commented on Jun 6, 2026

    @Iamliuxiaozhen
    Oliver Lin (Iamliuxiaozhen)
    on Jun 6, 2026
    Author

    Session type: Wayland

  9. Ballbattle commented on Jun 7, 2026

    @Ballbattle
    John Hedin (Ballbattle)
    on Jun 7, 2026

    Low professionalism comment incoming. I have a similar issue on MacOS 26.5.1 M1 with VS Code 1.123.0 in the integrated terminal.

    Copying >=1024 characters from the integrated zsh terminal, running a python program expecting input(), and then pasting it into said terminal causes the terminal to freeze.
    Pasting 1023 characters (or fewer) does not trigger the freeze (I could press enter and my program ran successfully).
    Pasting into the editor does not trigger the freeze.
    Copying from an online lorem ipsum generator triggers/does not trigger the freeze under the same conditions.

    Does this work with all extensions disabled? Yes
    Do newlines affect anything? I didn't figure out a way to test this
    1024? really? Yes, this is the exact breaking point (not including pressing enter)
    This also happens in the integrated python terminal with extensions enabled.
    What are your settings? No clue and I can't be bothered to try to learn which ones are relevant or how to find them.

  10. Iamliuxiaozhen commented on Jun 7, 2026

    @Iamliuxiaozhen
    Oliver Lin (Iamliuxiaozhen)
    on Jun 7, 2026
    Author

    I don't have more than 1024 characters; I only need to meet specific conditions to cause the game to freeze.

  11. vs-code-engineering
    removed
    new release
    on Jun 9, 2026
  12. Megan Rogge (meganrogge)
    assigned
    Megan Rogge (meganrogge)
    and
    Robo (deepak1556)
    on Jun 9, 2026

  13. meganrogge commented on Jun 9, 2026

    @meganrogge
    Megan Rogge (meganrogge)
    on Jun 9, 2026
    Collaborator

    Might be fixed by #320646

  14. deepak1556 commented on Jun 10, 2026

    @deepak1556
    Robo (deepak1556)
    on Jun 10, 2026
    Collaborator

    Oliver Lin (@Iamliuxiaozhen) can you share crash dump following https://github.com/microsoft/vscode/wiki/Native-Crash-Issues#creating-a-crash-report

  15. Robo (deepak1556)
    added
    info-neededIssue requires more information from poster
    freeze-slow-crash-leakVS Code crashing, performance, freeze and memory leak issues
    linuxIssues with VS Code on Linux
    terminalGeneral terminal issues that don't fall under another label
    bugIssue identified by VS Code Team member as probable bug
    on Jun 10, 2026

  16. Iamliuxiaozhen commented on Jun 10, 2026

    @Iamliuxiaozhen
    Oliver Lin (Iamliuxiaozhen)
    on Jun 10, 2026
    Author

    I reproduced the crash with code --crash-reporter-directory ~/vscode-debug.

    3b2e6800-c342-4c17-a037-79bcc614e7d6.tar.gz

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