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So, whenever I go to youtube on safari and click on fullscreen this white bar appears on the right side. I've tried clearing the cache but that didn't work. Also tried quitting safari and restarting my computer but nothing worked.
Also checked on other browsers like google chrome and it doesn't happen there, so I don't really know what its wrong with safari...
Can anyone help me?
MacBook Air 13", 10.13
I have collected more reports about this problem.
Guys, please file bugs, if you don't, this won't get fixed.
Since, yesterday, January 31st 2019, I can't watch full screen youtube videos in Safari. In full screen mode, the videos render on only the left part of the screen. The right part of the screen, and the lower part of the screen are white.
I filed Apple bug 47733671 for this. Please file more bugs at the Apple Bug Tracker and reference this bug number!
Summary:
I can't reenter full screen mode on youtube videos viewed in Safari after I exited it once.
Steps to Reproduce:
Expected Results:
I expect the video to be full screen.
Actual Results:
The video is not full screen after step #5. After step #3, the video is full screen, but it appears the video can be set to full screen only once.
Only a small portion of the screen is used. The rest is white. Here is an example of the problem, and here is another example. Note that that is a screenshot of the entire screen. I can see the extra black and white portions.
If I refresh the Safari tab, the behavior persists.
If I create a new Safari window, the behavior resets, and I can view full screen youtube videos, but again, only once.
I first noticed this problem yesterday, on January 31st 2019.
Any other video site (apart from youtube) works fine. Also Chrome and Firefox work fine.
Version/Build:
The version of macOS doesn't seem to matter, I tested macOS 10.13.6 (17G65) and macOS 10.14.2 (18C54).
The version of Safari matters:
Not working:
Working:
Configuration:
This behavior was reproduced on multiple computers, desktop and laptops.
Additional information:
It appears the smaller image I see instead of full screen has the same size as the original Safari window. That got me thinking, so I enlarged the Safari window to test this hypothesis. It appears that if the Safari window is large enough, the problem disappears.
There's a problem even without full screen though. It appears that sometimes youtube doesn't resize. This correlates 1:1 to the full screen problem. If youtube resizes, full screen works, if youtube doesn't resize, full screen mode fails.
It appears that on my iMac 2834 pixels wide is already too small. This value depends on the display used. On laptops, it's lower.
Another way to see the problem is this. IFF the Safari window is less wide than some number of pixels, after you have entered full screen and then exited it, youtube doesn't resize anymore as you change the dimensions of the Safari window.
On older Safari versions, where youtube works fine, this is how it works:
It appears that on Safari version which do not work, step #3 doesn't happen. Window is stuck at step #2.
More reports of the same bug:
Please file more bugs at the Apple Bug Tracker and reference the bug number 47733671! This is how Apple prioritizes fixes, by the number of bug duplicates!
Try setting up another admin user account to see if the same problem continues. Please post back on whether or not this worked. Also try the Safe Mode. Please post back on whether or not this worked.
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I have exactly the same problem. But I´m not very hopeful it will get fixed. I have also the netlfix streching bug which is described in this thread https://discussions.apple.com/thread/250133767
But Netflix is buggy on safari for a very long time and it isn´t fixed. so I´m in no hope. Tried Opera, everything there works fine. I´ll try that for the time being...bugfixing seems to be no longer a concern in the donout castle.
I have the same problem, I filed Apple bug 47733671 about this.
Affected Safari versions:
Not working:
Working:
Please file more bugs at the Apple Bug Tracker and reference bug 47733671.
Wow! You have described my issue to the point! Hopefully a solution is on way!
More reports: https://discussions.apple.com/thread/250133767
same problem here since yesterday. haven´t changed anything which might cause this. Other Browsers are fine.
Hey, same problem here, happens also in Netflix and Vimeo, but not every time... When I don't have the withe boards on the sides, the video changes size every 2/3 seconds...
More reports of the issue: https://www.reddit.com/r/MacOS/comments/alwqku/youtube_full_screen_glitch_help/
Interestingly enough Safari Version 12.0.3 (13606.4.5.3.1) running on macOS 10.13.6 (17G5019) works on my 12 inch Macbook, but fails on my 15 inch Macbook Pro.
More reports: https://www.reddit.com/r/youtube/comments/altth6/youtube_fullscreen_acting_weird_on_safari/
That's why it's important to file bugs. The more bugs filed, the greater the chance this problem will be fixed.
Safari Version 12.0.3 (14606.4.5) running on macOS 10.14.3 fail on MacBook Pro 13 inch too
SAME ISSUE - Bug reported.
Fullscreen on youtube appears with a white board on the right side
