Two updates ago, the game became a buggy mess. Tons of missing textures, specifically concerning the battlepass progression bar and the border of the Modes menu. The Event Tab in the progression menus is also entirely missing its textures. That is, if I can even get the progression menu to open properly. Most of the time, when I click on the Progression tab, a bugged version of the Quests screen replaces 3/4 of the main menu screen instead. I have to go into the Modes menu and back out to get another shot at properly opening the menu. This happens randomly and never works properly the first time. On top of this, the game is suddenly INCREDIBLY laggy. I haven’t even seen these obvious issues listed as known problems. My computer has had no prior issues playing the game and none of my settings or even Windows 11 version have changed. This only showed up two game updates ago. These missing textures are entirely white, btw.
Try the “Scan & Repair” function of the BattleNet client.
You find it next to the big blue play button behind the cogwheel symbol.