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  • Today I updated my version of Opera to the last one. When I click "Full Screen" on YouTube, it shows me the message "Unable to go to full screen mode." Then video opens in the full screen, but the entire YouTube interface stay visible (buttons & etc.).

    I try to delete all extensions of the opera, and even reinstalled it. But nothing helps. In other browsers it works fine.

    Please help me to fix it.

  • Set DPI to 100% for now. It seems to fix the problem.

  • oh, thats what is causing my fullscreen to occasionally spaz out. I have dual monitors that are different sizes (one is 4x larger than the other) but operate at the same native resolution, using different dpi setting for each. not using DPI kinda makes everything else on my computer unusable on half my screen space which isn't really much of an option.

  • You can launch Opera in 96dpi (100% in windows terms) mode - add --alt-high-dpi-setting=96 to Opera shortcut target line.

  • Thanks to all? it helps.

  • NO NO NO! I just posted the same problem. Forget about setting dpi it will screw up other programs. Just do this (for now-until the bug is fixed):

    When it is fullscreen but has the title bar at the top and the play/sound video control bar at the bottom just CLICK ON THE VIDEO. So you understand exactly. Click dead center on the video while it is playing. One click.Then 1/2 a second later, the bars at the top and bottom will disappear,leaving you "true",uncluttered fullscreen. The way God intended.

    I can't believe more people haven't complained about this. I was about switch browsers till this was fixed, then I stumbled onto this simple fix.

    Oper ver 38.0.2220.31 win8.5