The taskbar does not disappear when the video is expanded to full screen. What to do?

Question

Windows

The situation is as follows: when I expand a video to full screen, say, on YouTube, the taskbar remains visible until I click on the video. Checked in Edge - there is no such problem. I do not want to install other browsers, because it will be hemorrhagic. Browser Yandex. Browser version18.4.1.559 beta. I wrote to the browser support about two weeks ago - they are silent. Just in case, I’ll clarify that this is not a situation where you need to restart the explorer and so on (I even tried)