Testing some more today (with one self-hosted server (host), other client) revealed that if the locality of the AI is changed, it fixes this bug - but only for the PC it was set local to.
So in my case it made it possible to pick up items from a dead body local to my connected client, but from my host I couldn't pick anything up from that body anymore.
When I made the body local to the host again, I could pick stuff up on the host again, but not from the connected client.

I like the new syntax of actionKeys. It makes some things previous impossible possible. However I have a request:

In T161512#2256705, @Tenshi wrote:

Thanks for the response. Which weapon did you choose to crash yourself with, in your test without mods?
I want to see if I'm able to reproduce it on my device.
Edit: https://youtu.be/Q5FTMVSJJN0 this is my repro attempt on Profiling. Am I doing the same as what causes your crash?

In T161512#2256550, @Tenshi wrote:

Tested on Profiling build 2.06.148478
Tested the script with only CBA and CUP weapons loaded, had no crashes or freezing while preforming the repro.
Can you test if the issue persists on profiling for you?

In T161512#2248989, @BIS_fnc_KK wrote:

I forgot to mention that I managed to reproduce this bug on a different computer with the 2.04 legacy branch and the 2.06 stable branch.

Could you please provide a repro with no mods loaded. The mods might have lb event handlers set which could conflict with lbClear and thus cause crash. Not much we can do about that. However if the crash happens in vanilla content, we can investigate the cause more thoroughly. Thanks

In T161512#2248956, @BIS_fnc_KK wrote:

have you reported this issue to CUP and RHS?

In T161512#2248183, @dedmen wrote:

cma_x64AVX2!cma_x64AVX2 [fail:0]

crash is in your custom cma_x64AVX2 memory allocator, try not using that, that will probably fix it.
Also get rid of your -maxvram=6000 start parameter, thats nonsense.

In T126030#1672863, @POLPOX wrote:

I don't know this works in dedicated though, place

_nil = this spawn {_this setUnitLoadout getUnitLoadout _this}

in Init field, you can now loot items from these dead bodies.
However this sometimes failed to fix it(make him naked). Use sleep or waitUntil or something to more accurate execution? Need confirmation.

More useful usage example:

waitUntil {time != 0} ;
{_x setUnitLoadout getUnitLoadout _x} forEach allUnits ;

in init.sqf.