cant copy SMuFL code in MS4

Hello!

When in the master pallete, I can't copy the SMuFL code in musescore 4 on linux. Has something changed or is this a bug?

On the other hand, I want to copy this code to insert it as text on a line, i can add text to the beginning of a line in properties, but now there is no option to add text to the end of the line, or am I missing something?

Many thanks in advance!