I have my toolbars docked at the top of my main window. I change toolbars using tabs. If I'm using a toolbar and then click on a different tab, it seems my main window loses focus; i.e. spacebar doesn't start/stop. I've been able to reproduce this.
I went back a couple of versions and it works as expected in 5.27, but not in 5.28 or 5.29.
Docked toolbar steals focus
Linear Mode
