Notification in general freezes plasmashell too often

Notification crashes plasmashell too often. Clicking on one, opening too many and closing them, “do not disrupt” mode showing me notification later, etc.
It doesn’t happen always but it is often enough that I grew habit of killing plasmashell process to restart it.
I don’t know how to gather relevant information about this issue. It doesn’t crash, so I dont’ know where to get logs.
and commands such as “notify-send” and “kdialog” has some sort of spam protection? I tried to test notification spamming to see if it’s reliably reproducible but it just doesn’t show up after few tries.