Hello.
GTK uses X11 and under X, there isn't really a clipboard.
See
https://unix.stackexchange.com/questions/450508/how-to-keep-clipboard-content-from-xterm-after-closing-it-like-firefox-or-le
Firefox has his own clipboard manager.
The easiest is to use a clipboard manager, for example with
Hello Michael.
> I'm getting heaps of this kind of warnings:
> Cinnamon warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a
> timestamp of 0 for 0x238 (Lazarus)
> ...
https://forum.lazarus.freepascal.org/index.php/topic,49955.msg363604.html#msg363604
😉
Fre;D
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