I got some PAL video recordings (720x576 anamorphic - 16:9 1024x576).
After installing the latest version 14.2.0.0 the thumbnails are wrong (5:4 720x576 instead of 16:9 1024x576).
Normally the thumbnails are resized from 720x576 to 1024x576 and it says "Resolution: 720x576 @ 1024x576".
I had to install 14.1.0.0 to get back the correct thumbnails.