We should not have to save just for a rating. It worked fine up to v0.88 and now it keeps the rating in Full Screen but it doesn't in View mode.
On top of this, I just noticed that changing the rating in the View mode doesn't save them. Back to the Browser the ratings are back to previous state.
In Browser and in Full Screen mode it's ok, values are saved.
For French keyboard you need Shift to get the figures 0-9. I just tried at work with a U.S keyboard and it works.
There is something linked with Keyboard layout. From Regional Setting you can add Keyboard US and then change in the taskbar as you like.
Both with MP and with the Classic one. My goal was to use XnView on an USB key with FFmpeg in the AddOn as described here.
Doing so I can demo slideshows anywhere without need to install K-lite codecs on the target machine (which I can't impose to the PC owners).