I have a minor problem with the drop-down menus. Sometimes, they are not “sticky”, but collapse immediately after clicking on them, making it impossible to select options. Clicking on the menu button several times usually fixes this, but its a bit annoying.
Maybe it has something to do with the java runtime environment? Im on arch linux, using java-21-openjdk and archlinux-java-run. Jabref installed using makepkg, from here: AUR (en) - jabref.