@PeterJones Hello and thanks Peter.
Notepad++ DebugInfo.jpg
“You uninstalled it, but have you rebooted to make sure that all remnants are gone?” Yes I did it because I don’t know why my computer stopped detecting some external hard drives connected through USB and tested in different ports so I finally rebooted.
Sorry but I realized (I think it could happened the same earlier) that could be a framwework windows border color problem (not windows or notepad++). I changed windows border framework because with dark mode I wasn’t able to see anything when I was managing windows border so I read a article how to geek in how to change it and now, I think that in the first image I can’t see the whole notepad++ window border because program is really top located and blue border is mixed with other program blue border
Notepad-Problem.jpg
But now it seems I can see notepad++ blue border mixed with other program blue border but I can see windows management icons
01 Windows frameworks.jpg
Sorry first for posting wrong images (this time I used upload image forum option) and secondly I think it could have been a visual effect and not a bug of windows or notepad++, anyway, I will keep checking it to see if I experience it again.
Thanks a lot for your help @PeterJones