Copy & Paste Text from other tools

I’m trying to copy a text from another tool (Word, Notepad,…) to a textarea in my Exeoutput application.
It’s just a manual operation (select text, ctrl+C, ctrl+V) but nothing works, with or without context menu.

Any suggestions?
Thanks!

Is it an application using Trident or Chromium engine?

Chromium engine

Any news about this?
Thanks.

Just wait for ExeOutput 2 with updated Chromium engine