Thanks for updating QW after a while!
There is one minor bug that's somewhat annoying: I have QW configured to automatically start in full screen. But in that case, the mouse cursor is not hidden automatically. I have to move the mouse slightly to make it disappear.
If I remember correctly, this bug was introduced in version 1.1.3 and still persists in 1.2.2. I'm attaching my quickviewer.ini so you can replicate it easier.
My INI file.zip