[Lazarus] Clipboard Data Goes Away

[Anthony Walter]

On Linux Gtk2, over time I have noticed a problem where data copied to the
clipboard by a Lazarus application does not persist on the clipboard after
the Lazarus program has exited.

While writing this application
<https://cache.getlazarus.org/images/desktop/capture-tool.png> that
captures image data to the clipboard, the data on the clipboard is only
available to other applications while mine is running. If I exit my program
the clipboard data goes away. The same problem occurs if the clipboard data
is text rather than a bitmap.

Is this a known issue on Linux LCL Gtk2? Is there a workaround?

Thank you for your attention.
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