a workaround post found in forums: "to encounter this bug just switch from passenger seat to pilot seat and it is gone... if not possible buy a quad go to passenger there and switch to driver dismount quad and get into heli / jet again everything perfect..."

^This

I myself am too much frustrated about this bug. Immersive Tactical Gaming in ArmA on Public servers (Where not everyone is on Teamspeak) is not possible anymore. IMHO There could be another 1000 great DLCs and beautiful new Islands. I don´t care - as long as the main gameplay is disrupted by this Communication issue, i won´t join anymore. Staring at the chatbox typing and reading while flying NOE etc.- no sorry. It´s just impossible. I personally gave up hope.

still persists in 1.44
Are you still on it Bohemia?

Still persists in 1.4
Please BI, these laggy channels are killing multiplayer gameplay. Please fix it! You are hopefully still in Progress with that.

Just Please don´t make Choppers explode when rolling slowly upside down.