Wave Nodes passive trigger when they shouldn't

I don't see a thread for this, but it's been happening to me for a long time (if I had to estimate, roughly 3 or 4 years).  If I down a character in a wave node and the next wave that comes in has someone with a passive power that triggers on them getting hit (like 3* Carol Danvers or 3* Hulk) or special tiles getting matched away (the Symbiote dogs), their power will fire even though they weren't there when the actual triggering event happened.