I use notepad++. I point it to a window and so far have no trouble.
notepad (The standard one without the ++) is something else. Finestra seems to get confused, informs me that notepad was sent to the window that I aim notepad++ at, then sits back happily. I cannot find the window and must use task manager
to get rid of it.
I see several work-arounds I could try, but I suspect that y'all need to know that some apps have names that include special characters. This may clear up other issues and shouldn't (har-har) be a difficult fix.