MPS-19058 [build:MPS-129.380] run in EDT failure: Argument 0 for @NotNull parameter of jetbrains/mps/smodel/action/NodeFactoryManager.createNode must not be null
MPS-18898 Exception in console on startup
MPS-18897 Properties and children of concepts not accessible after migration (MPS3)
Merge remote-tracking branch 'origin/MPS3.0'