Client Bug

maybe this is normal? maybe its my laptop? dunno but I found a glitch that kept my game active even tho i lost 4 hours ago. I managed to notice because i kept hearing blitzcrank noises while having no sound in any of my tabs. Went to open League of Legends client after being offline for 4 hours and i noticed i was able to make a game but while looking through my friendslist to invite to join someone i kept hearing blitzcrank noises so muted my client and checked everywhere to finally realize, the game i went afk (due to inevitable irl issues) as blitzcrank 4 hours ago, was STILL playable. I opened it and moved around but couldn't kill anything because everyone was frozen. i asked the 5 man i was with earlier and it turns out they lost that game, meanwhile i could still open a new game of league when logging in to the client.

Steps i took: closed my laptop mid game (forgot to close/leave/ff) Left game on for 2 hours and closed the client but not the game Came back 2 hours after and logged into my league client the game said i was disconnected but it wasn't letting me close right clicking the game, hovering over and hitting the X to close, none of it worked

I used task manager to close it finally because i didn't want to break my client by starting up a new game, don't know what it could've done so i thought i'd atleast tell someone so it doesn't lag someones pc to death or something, since the game was taking ram, cpu, and internet that entire time