Also, I would like to point out that holding Shift, Ctrl, Alt or any combination of these, don't work as well. Any help?

Try to update to the current release to see if this still happens as I'm not seeing this.

• https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

The PiP aspect ratio is locked for me on Ubuntu 23.04 Wayland.

Are you using Cinnamon, MATE or Xfce?

I can resize my PIP window with no bars. see screenshot Try downloading Firefox from Mozilla. Download, unzip, and run firefox-bin from the folder and see if you have the same issue. https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

What Desktop? X11 or Wayland? Are you on a desktop (DIY) or laptop? What make and model? Graphic card(s) info? You can also just post a pic of neofetch results. see screenshot

Operating System: openSUSE Tumbleweed 20230904 KDE Plasma Version: 5.27.7 KDE Frameworks Version: 5.109.0 Qt Version: 5.15.10 Kernel Version: 6.4.12-1-default (64-bit) Graphics Platform: X11 Processors: 16 × AMD Ryzen 7 5825U with Radeon Graphics Memory: 62.1 GiB of RAM Graphics Processor: AMD Radeon Graphics Manufacturer: HP Product Name: HP ProBook 455 15.6 inch G9 Notebook PC

I can resize my PIP window with no bars. see screenshot Try downloading Firefox from Mozilla. Download, unzip, and run firefox-bin from the folder and see if you have the same issue. https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

Just tried this method, and no luck, same issue.

Here's my neofetch screen

The PiP aspect ratio is locked for me on Ubuntu 23.04 Wayland. Are you using Cinnamon, MATE or Xfce?

It would be Cinnamon 5.8.4

Just out of curiosity, I've downloaded Chrome, and installed their official Picture in Picture extension, and it works just fine, the aspect ratio is kept, so I'm pretty sure it's a Firefox problem in my end. I tried looking everywhere on the about:config page, and nothing works. I don't know what else to do. I'm not switching because I love Firefox, but since I'm a youtube addict, I really want to find something that works.

Are you in Wayland? Did you try KDE? Just for S&Gs fire up a usb live stick or VM of another OS and see if you have the same issue.

Try setting the environment variable MOZ_ENABLE_WAYLAND=1 if you are on Wayland.

I'm just starting at the linux universe, after some research, I finally get what you all are asking, apparently I wasn't using wayland. My workspace was Cinnamon(Default) using x11, after installing Plasma Wayland, it worked, but it feels like another pc. The problem was with Cinnamon itself apparently, now I will try to find a fix without changing the desktop entirely

Ok, so Cinnamon only runs on x11, and that's what is making it break (even though Chrome works just fine), My solution was to use the GNOME Desktop Environment, it looks way better than Plasma.

I'll stick with GNOME for now, until Cinnamon gets Wayland support. Thanks all for the help, I've learnt a lot about linux trying to fix this.

If you're done just mark it as resolved so it's off our plate and have a nice day.