VS CODE - disable UNDO command after file was closed

Question

If I'm making some files changes then close it and then reopen it, I will be able to undo those changes. How can I disable this behaviour that only changes made in the current open session can be reverted?

PS: this behaviour was not present for older versions of VS code.

Answer 1

See v1.45 Release Notes:

Disable persistent Undo

Last milestone, changed the Undo/Redo stack to be persisted when you close a file and reopen it. Not everyone wanted this new feature, so there is now a setting, files.restoreUndoStack, to disable persistent Undo.

[Additional info: see v1.46 release notes - you can undo even in files that were closed and remain closed.]