As title, I hide the title bar using Firefox’s built-in method (a toggle in its UI customization). When I move my Firefox window to one side so that it fills half the screen, the title bar will reappear. I have to turn on and off Firefox’s option to hide title bar again.
Obviously it is a undesirable behaviour and probably a bug (not sure if it’s on MATE’s part, or Firefox’s, or both). For reference, on Xbuntu it works flawlessly as the title bar won’t suddenly appear when snapping.
I guess the problem is caused by some settings of window manager. Any fix I can do? Thank you very much.
Edit: I just find that as soon as I resize the Firefox window, the title bar will appear. I modified the OP to reflect this. Also I have been using Nightly for weeks if not months.
It’s almost certainly a Firefox issue. Titlebar hiding is a new Firefox feature. Are you using the default Firefox version? If so, I think that issue has been fixed in later versions of Firefox that you get eventually. I mostly use Firefox Nightly, and I haven’t seen that issue in a while.
Actually I have been on the latest Nightly for weeks. And I modified the OP as I find that as soon as I resize the window of Firefox, the title bar appears. So it’s not just snapping causes the problem.
I also tried different window manager (originally I used Marco, Compton), but there’s no difference.
Hmm, I haven’t noticed it, but TBH I almost always keep Firefox maximized. I’m out of town this weekend, but I’ll give it a try later next week when I’m home.
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If you do see it with up to date Nightly, try a new Firefox profile (or new system user account) just to be safe, then the best place to file a bug is on Mozilla’s Bugzilla. Then mark the master GTK+ titlebar rendering bug as depending on that new bug.
I got home and still don’t see it, even with a new Firefox profile. But in a new user account I do see it. I have a lot of prefs and tweaks that could be influencing it, so it’s hard for me to say why it’s not happening for me, but it shouldn’t be happening without them anyway.
I noticed if I closed Firefox with the window not maximized, then the titlebar would stay hidden when I reopen Firefox. But if I close Firefox with the window maximized, then once I restart Firefox it will get the second titlebar as soon as I un-maximize the Window in any way.
I will try to submit a bug soon if you haven’t already.
Ah, thanks for this and sorry I somehow missed your last post. If you will, please help to submit a bug as I’m not familiar with the procedure on Bugzilla. Thanks again for your help!
I’ve been busier than I thought… I just got around to submitting the bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1482716