Don't know what exactly does it, but in a project I'm working on currently the track meters, which are segmented and normally have a gap between the left and right channels are losing most of the gap after I've done some tweaking either to the media or FX on the track. Here's what it's doing. The one on the right is what it should normally look like.
Another thing that seems to have changed in some recent version is the item properties panel now looks reversed color scheme wise. I use a dark theme with an xfce desktop. This is what the panel now looks like, where before I'm pretty sure it had a dark background in some previous versions.
