Hello! First time posting, so please let me know if I need to do anything differently when reporting bugs.
I don’t believe the Disposability trait (Your creatures’ buffs persist through death) is functioning correctly, at least to the extent that it is the second trait after fusion. I have not tested this on the original creature alone (Waspid Worker).
The trait is currently on a fused Waspid Slicer as a secondary trait in my party with my current specialization being Tribalist. Upon death, all buffs seem to be falling off all creatures, including the buffs granted at random at the start of combat for each creature that shares a race with another creature in the party (Tribalist Perk). It could be that this is working as intended for these buffs due to them being free Perk buffs, but I thought it was worth reporting.
Really enjoying the game overall so far - keep up the good work!!