I have had my taskbars auto-hide themselves for the longest time. But I've noticed that recently the extra taskbars that DisplayFusion creates now don't auto-hide themselves when you quickly move the mouse cursor to the edge of the screen and move it away shortly after. To auto-hide it, you have to either...
1: move the cursor to the edge of the screen that has the hidden taskbar and keep the cursor there for a few seconds before moving it away for it to auto-hide itself
or
2: if you did move the cursor away too quickly, then you have move the cursor back to that edge (briefly is fine in this case) to make it hide itself again when you move the cursor away this second time.

It becomes annoying when you accidentally move the cursor briefly to the edge and have it block part of the window indefinitely until you have to intentionally take action to get rid of it.

I'm using the latest beta version, but I think this problem has existed for at least a few beta versions already.