The extra square or space below the navigation bar in the Vivaldi mobile browser after updating to One UI 8 is a known issue affecting not just Vivaldi but also Chrome and other Chromium-based browsers. This space appears even when playing videos in fullscreen, manifesting as a distracting gray or blank area that does not go away, causing misalignment in videos. The issue seems related to changes in One UI 8's handling of navigation gestures and the system UI, particularly around the gesture hint and immersive mode settings. Attempts to toggle gesture hints on or off do not resolve it. Some users report that only Samsung's native browser avoids this problem, and the issue seems to be linked to how browsers handle the display area reserved for system navigation buttons in One UI 8. There is no current official fix, but temporary workarounds include disabling experimental flags like "edgetoedgeeverywhere" in Vivaldi's internal settings (vivaldi://flags), or rolling back to a previous browser version before the issue appeared. The root cause is likely a One UI 8 compatibility bug affecting browsers using Chromium engine rendering and navigation bar display management �������.In summary, this extra space is a bug related to One UI 8 interacting with Vivaldi and other Chromium browsers' fullscreen and navigation UI behavior. Until an update fixes this, key options are flag tweaks in Vivaldi, trying other browsers, or downgrading Vivaldi to an earlier version without the bug.
Have same problem just ran Nov 2025 update and have space in bottom. I use Brave but Chrome has this issue even my home screen looks affected. Very annoying this would make it to a production build. I'm on S25 Ultra
