I bought divine barrier but double tap to self cast didn't work, alternate cast is set to double tap, I can't remember which game it was to mention match id.
Double tap self cast doesnt work with certain things, it used to not work with bebop 2 (because I assume it was instant) but they changed it so it works now.
I recommend changing self cast to a modifier like mouse5 as a work-around for now
Actually, I figured out that it's not a bug, it's the Alternate Cast Double Tap Window setting which was set to 0.15, increased it to 0.30 and Divine Barrier works now. That setting has to be worded better, it's a bit confusing.