crash when loading dynamically a patcher into a poly~

Miscbugs/issues
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Zoy

Hello, I need some help to fix an issue when I try to load dynamically a patcher into a poly~. When I do so, 4 times out of 5 Max crashes and I get the exact same crash report, seemingly involving the poly~ object itself.

All my patches are in the same folder (dummy poly~ and patchers) and they all have the same number of inlets / outlets.

Also when moving around the poly~ object in the main patch it suddenly gets more inlets that it's supposed to have, that's pretty confusing.

Here is the crash report (beginning and crashed thread) :

I'm running MAX 8.6.1 on an Intel macbookpro OS X 15.6

Thanks !