I have a game made in Godot 4 and it is set to "Embed in page". It used to work in embed mode but it works no longer. It looks like most of the embed options are completely ignored. The game does not start on page load. When I click to launch the game it opens in a new maximized (not fullscreen) window. The new window has a fullscreen button in the bottom right corner.

Am I doing something wrong? Is there perhaps some export option in Godot? Or perhaps some combination of settings on Itch? Or is it just how Godot html games work now on Itch?

Edit: It works in Chrome but not in Firefox.