I don't think i'll find an answer, because i think this is a PlayMaker "issue".
I mean, we have within PlayMaker our State-Description, where it works. We make a Return and the State-Description in the Editor does so, too.
I think it would be great if that same behaviour would work on Strings (Variables, Globals, Properties etc.)!
And yes, i tried it out, C&P works fine!
But could that be a potential problem while playing? Strange displaying of the Text-Format or something like that.