[Lazarus] Lazarus GTK clears clipboard on exit

[John Landmesser]

History:

I'm fighting with google-chrome-stable on Manjaro Linux XFCE that clears
clipboard history when closed.

Searched in vain with google but just noticed: gtk applications as
lazarus-ide does it also and clears history on exit. Same with apps
developed with lazarus.

I rember, but not shure, that this behaviour of an application is 
"usual" on linux??

Firefox for example is not doing this ...

Info:

Lazarus 2.3.0 (rev main-2_3-1125-g468f788b36) FPC 3.2.2 x86_64-linux-gtk2

Why do i asked this? Makes me crazy if i searched with google , found
something useful, copied, closed Chrome and shit: its gone. I have a
clipboard manager copyq where i can activate this item again ...
annoying :-(


Tipps are welcome

John