Thanks to @andrew84 who led me down the right path. I disabled an Opera extension called Adblock Plus and both the thumbnail images and all the components on the pages when playing the videos now show correctly!

Thanks to @andrew84 who led me on the right path. I disabled an opera extension called Adblock Plus and both the thumbnail images and all the components on the pages when playing the videos now show correctly!

@kemical79 Same occurs on 119.0.5497.88

@Opera-Comments-Bot
Youtube bug reported here

After upgrading to version 119.0.5497.70 on Win11, all video preview images are not displayed and on the video playback page all text is also not displayed. The problem does not return by clearing cache, restarting Opera or Windows.