I used to use autolayout add new constraints to make simple constraints to superview / relative view like this (for loooong time):
However, recently after upda
This behavior seems to be fixed on Xcode 11.4: release notes
Fixed a bug that prevented entering a 0 constant in the constraint popup editors. (54076090)
Original Answer:
I just found this behavior too, I tried adding the constraints 1 by 1 and Xcode actually respected the 0 value.
My two cents.
I know that this is no solution, but for temporary solution to prevent you to go through every constraint, I just found out that you get the desired behaviour if you insert '-0' instead of '0', but you have to insert one constraint each time.