It’s not very serious but it is really annoying that so many times the CTRL-Z mess up the code.
I removed the duplicate post 
What is messing up? Ctrl+Z seems to properly do the undo as expected on my Windows 11.
I don’t really know. I just bought a new Dell with windows 11, and almost every time I hit CTRL-Z something changes in the code, but it rarely is what I just entered. With my old linux this also happened, and every time my input have to be corrected I have to close and open the file without saving it, because I never know where exactly can occur the change if I try to undo it. It may cause some bug. What could possible be the cause of this?
Is it possible that the keyboard in portuguese be the cause? I really don’t know where to search for the solution for this… 
The fact that it happens with both your new Dell and with your old linux makes me think it does have something to do with the portuguese keyboard. Here are a couple of links I found that might help:
- Someone here reports similar issues in the Sublime text editor and someone says when they switched to english input it all started working
- Similar issues here reported on vim. The discussion there might be helpful.
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