I could catch some interesting behaviour of the playlist view: it has a little problem switching between grouping modes.

Yesterday I made a layout which has a grouped and a non-grouped playlist on different tabs. If I switch between them and use keyboard to select items without clicking on the playlist before - it seems to forget that it just changed grouping mode, thus it can select whole albums (groups) in non-grouped mode and vice versa, it skips album headers in grouped mode.
I've checked, 0.9.5.2 and 0.9.5.4b1 behaves the same.

edit. I forgot to mention that after a click it returns to normal.

Fixed, thanks for reporting.
There's really no need to post these in the beta thread, valid problem reports are always read by me - unless they're buried in less relevant topics.