Inventory bar disappears after importing a new minecraft skin

in practice, after I imported a skin in minecraft I tried to go to a sever and the main inventory bar was invisible with objects included (but when I open the inventory everything reappears and then everything disappears when you close it). At first I thought it was a sever problem but then I noticed that it also happened on normal worlds and I also checked if the skin could have viruses but I didn't find any, I hope a solution to this bug will happen in a future update.