Steps to reproduce:-
1. Click on a track to select it.
2. Press 'I' to open the Inspector.
3. Change the background colour.
What should happen: when you click on a colour in the pallet the background colour rectangle changes to that colour.
What now happens: it doesn't change, you have to click somewhere else in the Inspector to make it happen.
Odd that something like this that's worked since, well, forever, has been knocked out of kilter.
I'll report it if someone can confirm, thanks.