Description of problem: Traditional menus (e.g. when right-clicking in a website or on chrome) don't have borders. With x11 backend they do. Version-Release number of selected component (if applicable): firefox-47.0-7.wayland.fc24.x86_64 gtk3-3.20.6-1.fc24.x86_64 How reproducible: always Additional info: This does not affect popover menus (e.g. downloads or bookmarks or sandwich menu popver).
Issue still present with Nightly builds for wayland, 52.0a1, BuildID 20170215004354, downloaded from https://firefox-flatpak.mojefedora.cz/ (created with build scripts from https://github.com/xhorak/firefox-devedition-flatpak) See https://bugzilla.mozilla.org/show_bug.cgi?id=1339916 and https://bugzilla.mozilla.org/show_bug.cgi?id=1339917
I cannot reproduce this issue any more with firefox-wayland-55.6-1.fc26.x86_64 from Martin Stransky's firefox-wayland copr.