After updating to the new version of the Python extension, many lines of console output are being deleted #25335
Description
Type: Bug
Behaviour
In the screen recording, there's a brief frame showing all numbers being fully printed, however, when reviewing the console history, the final output is missing numerous numbers.
test2.mp4
Steps to reproduce:
- run code
Diagnostic data
launch.json configuration
XXX
Extension version: 2025.10.1
VS Code version: Code 1.102.2 (c306e94f98122556ca081f527b466015e1bc37b0, 2025-07-22T12:15:48.520Z)
OS version: Windows_NT x64 10.0.26100
Modes:
- Python version (& distribution if applicable, e.g. Anaconda): 3.12.7
- Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Conda
- Value of the
python.languageServersetting: Default
User Settings
languageServer: "Pylance"
Installed Extensions
| Extension Name | Extension Id | Version |
|---|---|---|
| black-formatter | ms- | 2025.3.11831009 |
| blamer-vs | bea | 0.7.3 |
| claude-dev | sao | 3.20.2 |
| cmake | twx | 0.0.17 |
| cmake-tools | ms- | 1.21.36 |
| cpptools | ms- | 1.26.3 |
| cpptools-extension-pack | ms- | 1.3.1 |
| cpptools-themes | ms- | 2.0.0 |
| csdevkit | ms- | 1.30.44 |
| csharp | ms- | 2.84.19 |
| debugpy | ms- | 2025.10.0 |
| gitlens | eam | 17.3.2 |
| hexeditor | ms- | 1.11.1 |
| isort | ms- | 2025.1.11821009 |
| js-debug | ms- | 1.102.0 |
| js-debug-companion | ms- | 1.1.3 |
| jupyter | ms- | 2025.6.0 |
| jupyter-keymap | ms- | 1.1.2 |
| jupyter-renderers | ms- | 1.3.0 |
| language-maxscript | ate | 2.1.4 |
| leek-fund | gis | 3.15.0 |
| tom | 1.2.2 | |
| python | ms- | 2025.10.1 |
| remote-explorer | ms- | 0.5.0 |
| remote-ssh | ms- | 0.120.0 |
| remote-ssh-edit | ms- | 0.87.0 |
| todo-tree | Gru | 0.0.226 |
| tongyi-lingma | Ali | 2.5.17 |
| vscode-dotnet-runtime | ms- | 2.3.7 |
| vscode-js-profile-table | ms- | 1.0.10 |
| vscode-jupyter-cell-tags | ms- | 0.1.9 |
| vscode-jupyter-slideshow | ms- | 0.1.6 |
| vscode-language-pack-zh-hans | MS- | 1.102.2025071609 |
| vscode-pylance | ms- | 2025.7.1 |
| vscode-python-envs | ms- | 1.2.0 |
| vscodeintellicode-csharp | ms- | 2.2.3 |
| vstuc | vis | 1.1.2 |
System Info
| Item | Value |
|---|---|
| CPUs | 12th Gen Intel(R) Core(TM) i7-12800HX (24 x 2304) |
| GPU Status | 2d_canvas: enabled canvas_oop_rasterization: enabled_on 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 video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off |
| Load (avg) | undefined |
| Memory (System) | 31.74GB (18.16GB free) |
| Process Argv | D:\********** --crash-reporter-id 53c2bcc6-f0ef-44f6-8040-9492f59b6011 |
| Screen Reader | no |
| VM | 0% |
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