Loading Screen Bug

There's a Bug i came across multiple times where I tabbed out while the game was loading and i couldn't get back in. I tried clicking the icon on my task tray but it wouldn't open i even tried Alt+Tab So i had to exit League and try reconnecting. It sometimes works and sometimes it says the usual error pop-up "check internet, you've been disconnected, etc" yeahhh i don't like it D: I'll just try not to tab out while loading for the time being