I've marked this as a duplicate, this is the oldest bug but the description and title here is misleading and I can't edit the latter.
Also to consider is bug 767941 which adds "Edit > Profile Preferences > General > Show menubar by default" to the items that need to be removed if a menuar is detected.
I've marked this as a duplicate, this is the oldest bug but the description and title here is misleading and I can't edit the latter.
Also to consider is bug 767941 which adds "Edit > Profile Preferences > General > Show menubar by default" to the items that need to be removed if a menuar is detected.