I have been using Budgie since 19.04 and Tilix was really one of the bright spots. I have a 4k display and in particular I liked that option+1 would place a terminal in the upper left quadrant, option+2 would place one in upper right, while option+3/4 would put terminals on the bottom. This also worked in 19.10.
Now with 20.04 I still have option+arrows to do left/right, but there doesn’t seem to be a way to make option- do what they formerly did.
Am starting to delve into the Tilix site documentation now, but wondering if anyone else has already resolved this issue.