Trump's position still appears to be "They use the bathroom that they feel is appropriate" even though he designates it as a states rights issue.
The effect is the same. If you’re for states rights, as Cruz is, as Trump is, and as I am, that will unfortunately allow liberal states to legalize some very unsavory things.
Meanwhile, pretending he’s not for what he’s for allows Cruz to bludgeon Trump on these issues. I have a problem with such blatant double standards, although I see that not everyone else does.