Adding a class derived from RNLoadingButton to Interface Builder causes permanent blocking of Xcode

[priore]

I verified this in Xcode 11.6:

I haved creating a new class derived from RNLoadingButton and overriding any function or property, e.g. the derived class is empty just layoutSubviews with the super call and no other content, and using this derived class in the IB this causes the permanent blocking of Xcode after opening of IB.