How to disable automatic undo of changes made?

Question

visual studio

Good afternoon! I ask for your help in setting up the studio.

The bottom line is that it returns the changes in the code to its original state ((
One project, Studio 17th and 19th behave exactly the same.

It looks like this:

I change this code:
time = DateTime.Now.AddDays(-1);
To this:
time = DateTime.Today.AddDays(-1);

I save the changes. And after 3-5 seconds it returns to original state.
Any changes - return to the original state (((

I didn’t twist the settings.

Thank you!

Answer 1

Where are the project files stored?
I observed something similar when the project was on a mounted cloud disk (Mega) and due to some kind of glitch it constantly synchronized the file from the cloud.