I have multiple monitors setup.
If I use Plank on monitor number 2 (position left) then the monitor number 4 is useless.
I can’t move any application to that monitor (only to the half).
This bug occurs in any other setup… If the Plank is on monitor number 3 then 2 and 4 don’t work well.
If it’s 2 and positon bottom then monitor number 1 doesn’t work etc.
Only combination that works is to always put a Plank on the most left monitor (in the above situation it is monitor number 4) but that’s totally impractical.