Unable to open Minecraft bug

When I open Minecraft bedrock, the game starts well, it has the Mojang Studios logo, but then a white screen comes up with nothing, then later on a black screen comes up, then I start hearing Minecraft menu music, can you figure out what's wrong? I'm not sure exactly what version this problem is from because my computer is an old Toshiba and it updated a few days ago so... I'm not sure. (OBS screen recording below.)