Jupyter Notebook File not saving after I click "save"

[jasonlkh-wa]

Issue Type: Bug

The issue I face is that I downloaded an ipynb file. Once I opened the file, I immediately click 'save as' to save the file on my desktop. I closed the file and open the file again on my desktop to ensure I was working on the right file. After all my work was done, I click the 'save' button and close the file, vs code didn't ask me to save the file before closing so I think that the file was saved successfully. When I opened the file again, the code could be viewed on my own computer but if I uploaded the file to others, the changes that I made would not appear. I would like to ask how to solve the issue and what is the possible reason causing this issue.

As the file is for my final exam, so it would be great if I could figure out the reason causing the bug so I can explain it to my course instructor.

VS Code version: Code 1.52.1 (ea3859d, 2020-12-16T16:34:46.910Z)
OS version: Windows_NT x64 10.0.19041

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz (12 x 2208)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off opengl: enabled_on protected_video_decode: enabled rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.80GB (8.19GB free)
Process Argv	--crash-reporter-id a574b6df-a066-4a72-817f-dc4c775fedc9
Screen Reader	no
VM	0%

Extensions (2)

Extension	Author (truncated)	Version
python	ms-	2020.12.424452561
jupyter	ms-	2020.12.414227025

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• File > Save As, does not work! (#110071)
• Files not saving (#110913)
• Save As - Doesn't work (#108178)

[rebornix]

/extJupyter