• VSCode Version: 1.44.2
• OS Version: Windows 7

Steps to Reproduce:

1. Open a big file, in my case a xml file that I generate from a script. I keep it open to check that my script properly generated what I expected.
2. Modify/Launch the script multiple times.
3. Once you're happy with it, close the generated xml file.

Expected the tab to close silently.
Instead, dialog poping up:

Keep the undo-redo stack for in memory (250.0 MB)?

I'd either like, from most preferred to less one, to:

1. have a button "Do not show again for current file" (persistent accross restarts),
2. or (a little worse) "Do not show again for current session",
3. or worse a global setting to completely disable that feature.

Does this issue occur when all extensions are disabled?: Yes