Hi, a Debian user reported that when using Ctrl-Q to quit Parole, the window disappears but the process is still there (it's obvious when starting from a terminal window). Downstream bug is at https://bugs.debian.org/931166 if you want to ask more details.
I'm using parole from current git master, ctrl+q finishes the process here (Arch Linux + gtk 3.24.10).
Never mind, I can reproduce now (video has to be playing). I get the following message on terminal: GStreamer-CRITICAL **: Trying to dispose element player, but it is in PLAYING instead of the NULL state. You need to explicitly set elements to the NULL state before dropping the final reference, to allow them to clean up. This problem may also be caused by a refcounting bug in the application or some element
Created attachment 8755 fix.diff The attached diff (can be pushed w/o my authorship) fixes the problem for me, although I don't know if it's the right/best solution.
Sean Davis referenced this bugreport in commit dd98777b771ad5308d6aef6ee22e09f105176455 Fix closing of Parole process with Ctrl-Q (bug #15698) https://git.xfce.org/apps/parole/commit?id=dd98777b771ad5308d6aef6ee22e09f105176455
Sure enough, that seems to do it. Thanks for the patch Andre!