Improper line wrapping in Python terminal

[LarsonPaul1]

Type: Bug

Behaviour

When using the terminal to run a Python shell in a project with Python files, the first instance of line wrapping in a line does not work correctly. Wrapping occurs early, and the "next line" appears overlapping the previous line.

Steps to reproduce:

1. Open a project containing at least one .py file.
2. Open the terminal using CTRL-`.
3. Run python.
4. If the nearest line to the input prompt reads "Ctrl click to launch VS Code Native REPL", the bug occurs.
5. Enter characters until the line wraps. If the bug does not occur on the first line of input, press enter and enter characters again.

Diagnostic data

Extension version: 2025.14.0
VS Code version: Code 1.104.2 (e3a5acfb517a443235981655413d566533107e92, 2025-09-24T11:21:37.073Z)
OS version: Linux x64 6.14.0-32-generic snap
Modes:

• Python version (& distribution if applicable, e.g. Anaconda): 3.12.3
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Venv
• Value of the python.languageServer setting: Default

User Settings

languageServer: "Jedi"

Installed Extensions

Extension Name	Extension Id	Version
js-debug	ms-	1.104.0
js-debug-companion	ms-	1.1.3
python	ms-	2025.14.0
vscode-js-profile-table	ms-	1.0.10

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-10400 CPU @ 2.90GHz (12 x 4000)
GPU Status	2d_canvas: unavailable_software 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 vulkan: disabled_off webgl: unavailable_software webgl2: unavailable_software webgpu: disabled_off webnn: unavailable_software
Load (avg)	3, 2, 2
Memory (System)	15.37GB (9.19GB free)
Process Argv	--no-sandbox --force-user-env --crash-reporter-id ce59dcdc-2074-4244-b028-44591d65a135 --crash-reporter-id ce59dcdc-2074-4244-b028-44591d65a135
Screen Reader	no
VM	0%
DESKTOP_SESSION	ubuntu
XDG_CURRENT_DESKTOP	Unity
XDG_SESSION_DESKTOP	ubuntu
XDG_SESSION_TYPE	wayland

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cloudbuttont:31379625
todos-0:31390406
multireplacestringcontrol:31393296
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3efgi100_wstrepl:31382709
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use-responses-api:31390855
86221569:31396493

[LarsonPaul1]

Setting terminal.integrated.shellIntegration.enabled python.terminal.shellIntegration.enabled to false appears to prevent this behaviour.

Possibly related to #25467.

[anthonykim1]

what if you turn on terminal.integrated.shellIntegration.enabled to true, but turn off python.terminal.shellIntegration.enabled to false? @LarsonPaul1

[LarsonPaul1]

Setting terminal.integrated.shellIntegration.enabled to false appears to prevent this behaviour.

This was incorrect. I actually had python.terminal.shellIntegration.enabled set to false. Setting it to true causes the issue regardless of the value of terminal.integrated.shellIntegration.enabled.

[anthonykim1]

@LarsonPaul1 So if you have terminal.integrated.shellIntegration.enabled disabled and have python.terminal.shellIntegration.enabled to true, you are still able to repro?

[LarsonPaul1]

Yes. If python.terminal.shellIntegration.enabled is true, the error occurs whether terminal.integrated.shellIntegration.enabled is true or false or not defined.

[iBug]

This will probably be fixed by #25521. Can you test the change locally (apply it to the file $PYTHONSTARTUP) and comment on #25521 if it helps?

[LarsonPaul1]

With $PYTHONSTARTUP pointing to the changed pythonrc.py and python.terminal.shellIntegration.enabled: true, I had no issues.