It is night over here, and I have not noticed the bug at all the whole day. I wonder if the latest update fixed this.

@panosv

But no other single application (that has tabs/stuff on the titlebar) on my system suffers from this. Also, Opera, like any other software, has suffered from serious bugs throughout the years, and many bugs which have only affected SOME users and noth others. For example, one bug that affected me badly was when my speeddial was vertically a multple (2+) of the (browser's) display area, then whenever I expanded a folder and restored again, the view position was always reset to the middle of the speeddial document. If that would have affected all people we'd read about it. Yet I never read anyone else having that problem, but when I insisted this was happening to me (filed a bug), it didn't take too long for the devs to fix.

Back on topic, I'm not familiar with the code that deals with miximized/restored windows (or anything else for that matter) to claim anything. It may or may not contain bugs. I personally incline towards the former. And I'm sure that if they look into it they'll find the bug(s).
Also later today, and during a few days, I'll be using FF inclusively to evaluate whether this is an Opera bug, or a Win7-32bit-sp1 / driver bug.

@panosv said in After full screen, the tabs lowering:

@eternal1

after returning from fullscreen I realized the menace is back.

With dark theme? Because, as you said above, your hardware is old (as mine on 2nd pc), and maybe the Opera (and other Browsers) is match more with the new hardwares.
Maybe, i'm not sure

I really can't stand the dark theme (I hate contrast between brighness (pages) and darkness (browser GUI)) beyond a certain level, to keep using it to evaluate whether the bug occurs then as well or not. Nevertheless, I doubt very much that this is anything beyond just a simple Opera bug. I don't remember firefox having such bug, and neither did opera for me until some weeks ago, so it's not like I installed new drivers or even updated windows that triggered the bug either. Some code change in Opera definitely caused this.

Browser has been running non-stop today without the bug showing up, but now as I was in deviantart viewing images, after returning from fullscreen I realized the menace is back.

Update: this session (i.e. today) I have not yet been plagued by that misbehavior. When it returns again (plz don't !) I'll notify.

@panosv said in After full screen, the tabs lowering:

@eternal1 The problem shows up again even with dark theme?
You have relatively new graphics card, i mean, your card is on the list with these that are keep updating? Or haven't anymore?

Well, I don't continously use dark theme because contrast between the pages and the super dark chrome of the browser is very irritating to me. I cannot stand it. Have you been using the dark theme ever since the "fix" ?

I have very old hardware (and GPU). I have AMD Athlon 64 X2 5200+, and ATI Radeon HD-4550. So it's old, but is sufficient for my needs. And there are no new drivers for it because they went stable many years ago. Meaning, if I download drivers, which come in pack consisting of drivers for many many GPUs, the HD-4550 drivers contained will be several years old.

Oh no, here we go again !

@panosv said in After full screen, the tabs lowering:

UPDATE: I noticed (ι didn't expect it), that if i enable the "dark theme" and restart the Opera, the event of lowering tab, disappearing. I don't know why.

I'm on Windows 7 Home Premium 32-bit SP1, and Opera 56.0.3051.99, and I have been plagued by this misbehavior (tabbar lowered after returning from fullscreen) since a few weeks back. I tested your tip on changing to dark theme and restarting. I did, and went fullscreen, and after returning I saw the tabbar NOT lowered. Disabled dark theme, and the tabbar is still behaving correctly.

Of course, I knew how to correct the bar placement (by clicking a tab, or adding new tab), but it was driving me mad.

I definitely recognize and remember this, but since I have given up zooming on youtube since months back I have unsurprisingly not been bothered by that, but..

I do have a problem that after a (sometimes short, other times long) while of youtube usage, said site becomes unusable such that it gets stuck on "loading" (freezing) for nearly ever whenever I navigate to a new page within that domain. I have tried disabling extensions (while enabling previously disabled one) one at a time, without result. On the other hand, once when this plagued me yet again, I opened new private window and visited youtube (including same pages that the non-private window was stuck in) in it, everything seemed ok, no problem at all. Everything was fluent. Then immediately tried in the non-private window and still same problem there.

Windows: 7 32-bit Home Premium
Opera: 46.0.2597.39 (this problem has plagued me since many versions back, for many months)

I'd like to report that with the build 37.0.2178.32 the bug has now been fixed. Thanks to everyone involved.