I was having this problem last night also. To resolve it i unchecked the auto self cast button in interface options, which I had enabled after the patch. Looks like the blizzard self-cast interferes with other stuff.
I noticed in the latest commit you're registering Comms w/ AceComm but you're only doing it for GROUP, why not RAID? Also any chance we could get a slider for the max percent? There appears to be a variable for it but no command to change it. Thanks.
At 100% scale instead of the red < i have 3 red dots, 2 on one line and 1 below it, this only seems to happen at scales: 100, 85, and 75 or less all other scales appear fine.
I'm running at 1920x1600 resolution with the ui scale slider set about midway between the .64 and 1 value.