@marcustomlinson, when copying/pasting from Geany into Geary, I didn't get an image. I believe I got the wrong text. But unfortunately I don't remember precisely.
I have seen this bug zillions of times in LibreOffice Writer, typically when copying in one window and pasting in another, and only a few times in other apps.
Thanks for your research determining that this is related to X11. That gives us a possible workaround: log into a Wayland session instead.
@marcustomlinson, when copying/pasting from Geany into Geary, I didn't get an image. I believe I got the wrong text. But unfortunately I don't remember precisely.
I have seen this bug zillions of times in LibreOffice Writer, typically when copying in one window and pasting in another, and only a few times in other apps.
Thanks for your research determining that this is related to X11. That gives us a possible workaround: log into a Wayland session instead.