InternalMessageQueue::dispatchMessage crashes on already-destructed message

I am testing my plugin with pluginval at the moment and ran into very strange problems.
It seems like one of the messages that are dispatched in InternalMessageQueue::dispatchMessage are already deconstructed (see screenshots below). This happens irregularly, but it does happen. However i were not able to identify the root of this in the plugin, as can be seen in the screenshots when this is happening, no plugin-code is executed (which does not have to mean anything, since this is all asynchronous).
I’ve quickly looked into the code of message dispatching, but i dont have any idea where to start looking for the root of the cause.

Is anyone experiencing similar issues? Any pointers what this might be?