SUMMARY Dolphin will copy video files in trash to /tmp, filling it up and possibly leaving the system without free RAM. STEPS TO REPRODUCE 1. Move a video file to the trash 2. Open the trash in dolphin OBSERVED RESULT The file will be copied to /tmp and will be kept there EXPECTED RESULT The file should not be copied to /tmp SOFTWARE/OS VERSIONS Linux: 5.14.10 (available in About System) KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.87.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION I think the files are copied there to generate the thumbnail, but that is not needed at all. Files in trash are just regular files in ~/.local/share/Trash, so the thumbnailer can just access them normally.
*** This bug has been marked as a duplicate of bug 368104 ***