That shouldn't be the problem. The CVar alwaysShowActionBars is set to 1 during the installation script. The buttons on each bar also have the showgrid attribute active.
Example bar3.lua (the one with the issue):
https://github.com/liquidbase/Duffed...s/bar3.lua#L21
Example bar4.lua (without issue, empty):
https://github.com/liquidbase/Duffed...s/bar4.lua#L22
On my main development char for beta there is no issue, but the bar is always filled up with skills and macros.