I have ran into a bug with Minecraft Bedrock Windows 10 edition. The bug started on the 1.16.200 update. I can not launch Minecraft. The game window turns red, no progress bar, then the window turns white. and it stays there. I have let it sit there for 2 hours but it never loaded. Restarted pc 3 times, still doesn't open. I do have 2GB ram but that shouldn't effect it. It worked before just fine. (I didnt see this bug on your website, tho may have not seen it due to this is the 1st time being here) So in order this is what happens. Red screen were the missing loading bar is, then the white screen were I dont know whats there. Then a black screen a few minutes later as you see. Hope this helps. Have a great day!