I was trying to copy some of the text in the compiler messages window in the IDE using the "Copy" option in the "Edit" dropdown a the top of the IDE. I selected the relevant text and clicked on the option. It did not work.
I tried again using the "Copy for Forum" and "Copy to HTML" options and they both worked fine. (but useless for me as they put a whole lot of extra formatting text in amongst the messages.)
In the end I used Ctrl-C, as I should have in the first place. That worked OK.
However, if the Copy option is there in the menu system, it should work.
Its the copy option in the menu that doesn't work when you have selected text from the black notification area (not the text editor window) of the IDE.