This may not actually be a bug, but I have auto-ascend turned on and stepping onto the Cetus entrance didn't automatically transfer me to the area. I spent some time thinking there was something else I needed to do to activate the door, but all that was required was '>'.
Huh, I've had that happen before and didn't think much of it because I sometimes have it on, sometimes off, but just checked it explicitly compared to other known/unknown branch exits and yep that's a thing. Strange, since it's just another exit. I'll get it fixed, thanks.