Trying to bind a state tree property ref in editor seams to crash SComboButton.cpp. Anyone know how to avoid this?

Created a simple “State Tree Property Reference” variable in a task, set it to bool, and am trying to bind it.

The second I click it before even trying to set a variable (or before any interface displays) it crashes due to the type not matching.

StateTreePropertyReferenceHelpers.cpp line 200
check(SourceAddress)

It’s null…of course because it has not been set.
Blueprint

Click here to crash: