Hello
Some strings may get to be garbled when copied and pasted within a same notebook of Mathematica.
I encountered the fact that the registory key "\Hkey_ CurrentUser\AppEventLabels\.Default" was changed to "\Hkey Current_User\AppEventLabels?fault" when pasted. In this case,it seems that ".D" was changed to "?".
\[CapitalThorn] was the name of "?". And the actually used character of "?" is :

I'd like to know how the Latest version of Mathematica should be.
Thanks.