This is exactly my situation
I tried four different browsers but they all have the problem that I can't copy anything from ELM to another tab and vice versa.
However, I think that it worked well at the begining of last year
Sergio, if you have any ideas or suggestions about such problem I'd like to hear them
Well, there is a Java security vulnerability, maybe your browser is blocking Java to execute properly. This vulnerability is something that arised some months ago, so maybe that's why it worked before for you.
I checked this solution for MAC users, maybe it can be of some help:
Anyhow, Ieva, does the page load? The problem you have is when you copy the result into the notepad or another web (a MTF thread)?