Created attachment 1100655 [details] gnome-nibbles' game table Description of problem: Even though this issue doesn't affect the gameplay, gnome-nibbles' look is not perfect with Wayland. I'd assume that a Gtk3 widget doesn't behave as expected. I'm attaching a screenshot for reference. Version-Release number of selected component (if applicable): gnome-nibbles-3.18.2-1.fc23.x86_64 How reproducible: Easily (but not always) reproducible. Steps to Reproduce: 1. Launch gnome-nibbles 2. Maximize the window 3. Start a new game Actual results: 1. The playground's wallpaper is "off-center" Expected results: 1. The background should fill all the game's table. Additional info: 1. If the window is maximized while the game is in progress, it seems that this bug isn't reproducible. 2. I assumed this is related to Wayland, but I haven't tried with a Xorg session yet. 3. Gnome 3.18 on bare metal + Amd video card + radeon (Open Source) driver.
It's a longstanding bug that has nothing to do with Wayland. It's fixed in 3.20, but 3.20 is a total rewrite of the game, so it's not something that can be backported to 3.18.