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One thing I would suggest is to respawn back to the original spawn point in case you fall off the map. There is no way to go back to the same scene except for going back to the explore page and opening the scene again.
Also, hitting ESC opens the menu. Hitting it again should close the menu. It feels a bit counter intuitive to click the “Dive into Scene” button again to resume, since you use that exact button to enter a world (new game vs resume game).
Nice stuff, most scenes seem to be crashing web page on a huawei p30, could be something to look into, lighting is also very bleeched for scenes that manage to load up…