Temporary File Produced When Debugging

[YFMao15]

Issue Type: Performance Issue

Hi, I am reporting something unpleasant when I am using VS Code to debug python files recently. I found out that a temporary copy of my original .py file is always being created when the debugging process pauses on breakpoints and errors. This problem is really disturbing, because I have to close the copied file if I want to restart debugging.

For example, in the screenshot below, my program pauses on the breakpoint of line 3. The original file is on the left side of the file bar, while the copy is created on the right. The only difference between them is the path displayed on the bar. The original one will display the right path, while the copied only contains the lowercase letters. In this example, the folder name is not superresolutionnet, but SuperResolutionNet. If I restart the debugging session, the program will start a new integrated terminal in the terminal slot. So, I have to close the window every time I restart my debugging.

Until now, I have tried reinstalling the python program, VS Code and python extensions for several times, but it seems that the problem is not solved after these actions. I failed to reproduce the problem on a second computer with the same extension and same python version. Thus, I would like to ask you for the help to figure out this problem. Thanks for you time.

Extension version: 2019.3.6352
VS Code version: Code 1.33.0 (0dd516dd412d42323fc3464531b1c715d51c4c1a, 2019-04-04T15:14:28.026Z)
OS version: Windows_NT x64 10.0.17763

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz (8 x 2112)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: enabled surface_synchronization: enabled_on video_decode: enabled webgl: enabled webgl2: enabled
Memory (System)	15.93GB (9.20GB free)
Process Argv
Screen Reader	no
VM	0%

Process Info

CPU %	Mem MB	   PID	Process
    1	    81	  7924	code main
    0	    66	  7612	   window (Issue Reporter)
    0	    65	  8500	   shared-process
    1	   166	 11196	   window (MainSRN.py - SuperResolutionNet - Visual Studio Code)
    0	   107	  2016	     extensionHost
   27	  1649	  7384	       C:\Users\myf15\.vscode\extensions\ms-python.python-2019.3.6352\languageServer.0.2.44\Microsoft.Python.LanguageServer.exe
    0	    11	  5648	         console-window-host (Windows internal process)
    0	    37	 11644	       electron_node main.js 
    0	    41	  3744	     "D:\Applications\Microsoft VS Code\Code.exe" "d:\Applications\Microsoft VS Code\resources\app\out\bootstrap-fork" ms-python.python "{\"common.vscodemachineid\":\"b79eee7eb73456503dfdf73ea7535a4cd20bca954854c64ea1ba8f907d6423fe\",\"common.vscodesessionid\":\"1ce8d7a2-6a47-449b-8819-f0b409bd03d71554537327054\"}" AIF-d9b70cd4-b9f9-4d70-929b-a071c400b217
    0	     6	  5964	     winpty-process
    0	    65	  6752	       C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe
    0	    11	 14456	       console-window-host (Windows internal process)
    0	     6	  8832	     winpty-process
    0	    11	   808	       console-window-host (Windows internal process)
    0	    70	  6628	       C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe
    0	    33	 11604	         "D:\Applications\Anaconda3\python.exe" c:\Users\myf15\.vscode\extensions\ms-python.python-2019.3.6352\pythonFiles\ptvsd_launcher.py --default --client --host localhost --port 62884 d:\�廪ѧϰ\ʵ����\BBNC\���ֱ�����\SuperResolutionNet\MainSRN.py
    0	    34	 10900	     searchService
    0	    13	 11488	     electron-crash-reporter
    0	    11	 13108	     watcherService 
    0	    11	 11540	       console-window-host (Windows internal process)
    1	   281	 11284	   gpu-process

Workspace Info

|  Window (MainSRN.py - SuperResolutionNet - Visual Studio Code)
|    Folder (SuperResolutionNet): 344 files
|      File types: tif(328) py(3) data-00000-of-00001(3) index(3) meta(3)
|                  json(2)
|      Conf files: launch.json(1) settings.json(1);

[DonJayamanne]

Duplicate of #4166