I realize this is a bit old now but I think I understand what you mean about Notepad. I switched to Linux shortly after this post and use Kate text editor. I also use an older machine that runs Windows 7 and found out a couple days ago that Kate works on Windows. I remembered this exchange and thought it might be useful. I didn't get it from the MS store but their nightly builds page. If you turn off most of the features, it works much like Notepad but with a long undo/redo chain, tabs for each open file, and you can save all the open tabs as a session to be opened together next time.