I found a small bug.
If you impose an file with ö etc. pp then comes �
I afraid we can't reproduce it here... Is still displayed with a question mark in Explorer when you save the file? Do you see the question mark in IW window title? Does it happen to any file name with that letter or just for this particular file? Maybe you can ZIP and send the file here privately?
on the stand alone version it's fine, it's not correct on the plugin.
Confirmed, thank you.
Fixed in version 3.1: https://pressnostress.com/2020/07/13/iw-3-1.html
Customer support service by UserEcho