Reproduction: 1. Go to Preferences menu 2. Tap on Start Page settings 3. Select from the menu the same setting which was previously selected i.e the default "Fennec Start" Result: menu does not disappear Expected result: menu disappears The use case is when a user wants to change a behavior or see what the options are and decides the already selected/default one is the best one.
I'm not sure if this is a valid bug as the user can simply tap out of the menu area in order to make the menu disappear...moving to enhancement status.
I filed it because I only realised this after several attempts to make that menu disappear and the fact that the menu was not responding when I pressed that option was rather annoying.
I think it's better to have this redundant functionality than to let the user think it's not responsive, as from my experience most software respond when users press an already selected setting.