
The following threads are in connection with those bugs:
1) Thumbnail height slider - http://newsgroup.xnview.com/viewtopic.php?t=2409
2) Resizing behaviour - http://newsgroup.xnview.com/viewtopic.php?t=2459
3) Info icons - http://newsgroup.xnview.com/viewtopic.php?t=2462
4) Disabling preview - http://newsgroup.xnview.com/viewtopic.php?t=2489
5) Disabling status bar - http://newsgroup.xnview.com/viewtopic.php?t=2490
I assume filmstrip layout is developped from layout #4 (don't know it's name).
The main difference is the vertical scrollbar, which isn't wanted in filmstrip layout.