MCD / MCD-5986

When launching Minecraft Dungeon in the official Minecraft launcher, everything is fine, but after fully loading and pressing any button (As it is written on the screen), an authorization window appears. It does not become white, but simply appears white and does not want to be loaded in any way(Show lines for entering mail and password). Waiting for the download did not give anything.After clicking the cross again, the background with the inscription Click any button, after clicking it starts to load and you can close the game.