Square?

[B-Vs-V]

In my tests I may have changed some settings and I can no longer make a square using the Rectangle tool. Every time I change one value, the other adjusts accordingly:

[VectorStyler]

@Pat Was it the proportional mode in the Shape panel?

[B-Vs-V]

@VectorStyler good point, exactly that... I don't even know what I did to lock the shape sizes, it's not a panel I use (very often)