@chrisccoulson I can confirm that the problem can be reproduced with all FF extensions/plugins disabled.
Since FF 51.0.1, enabling or disabling the extension "ubuntu modifications" does not fix this issue any more (to my knowledge, that was the case up until FF 49 and 50).
@chrisccoulson I can confirm that the problem can be reproduced with all FF extensions/plugins disabled.
Since FF 51.0.1, enabling or disabling the extension "ubuntu modifications" does not fix this issue any more (to my knowledge, that was the case up until FF 49 and 50).