Comment 8 for bug 1775497

gdb1.txt happens here:

https://github.com/mixxxdj/mixxx/blob/f2d670edeb483efb066bf7f00255d01df2f0017c/src/engine/filters/enginefilterdelay.h#L21
This function is only accessing it's objects memory, a memory issue here is unlikely.
So the whole object "m_low2" might be void here: https://github.com/mixxxdj/mixxx/blob/main/src/effects/builtin/lvmixeqbase.h#L189
It is stored here:
https://github.com/mixxxdj/mixxx/blob/3085bbe95107fd789a8a966dfeb341cfe74cfad8/src/effects/effectprocessor.h#L143

gdb2.txt
gdb3.txt

is the same cause. An invalid group state. I will have a look.