NBT tags NOT WORKING in conditions, it used to work in previous versions

I'm trying to make the entity have a specific texture layer if the boolean tag "isMale" is set to true, I've already made the procedure that sets the entity to have this tag as true in initial spawn, and THIS PART DOES work, as you all can see in the minecraft chat screenshot, the entity already has the tag

the problem is: the condition does not detect the NBT tag as true, so, it does not apply the texture to the animal (I tried to replace the NBT with other boolean stuff too, it works with other options, but not with NBT)