Ah, indeed! This is very old remnant mechanics which must have had some logic years (or decades) ago, but as the ENTER is the key to zoom in/out there's no purpose for it anymore.
Fixed now, and in the next patch '.' doesn't cause enter checks anymore.
Meanwhile, trying to wait/rest with [-] in short intervals is the best alternative until the next patch is out.
Fixed - persists in 3.63.