just tested the new version 1.96 beta 2. Works fine, except for several GIF animations (strange colorshift ("black pixels") after certain frames). But the reason I am writing may be a minor "bug" (?):
I configured the program to display NO tabs and not to open more than one (1) picture at a time. But it doesn't matter at all, because XnView persistently displays the button "minimize, maximize and close" at the top right. (See screenshot).

Thanks for this wonderful program!
- Moon