Michele Calgaro via tde-devels composed on 2021-11-28 12:14 (UTC+0900):
You can try running it in an xterm and compare with Konsole to see if you spot any difference.
How? One of the reasons I depend on Konsole is its menus that Xterm doesn't have, e.g. copy & paste.
Environments where the problem seems to be consistent are Mageia and Fedora.