Low Priority for AFK'ing in a match that the server dropped me from

I queue up for a game of solo queue, lock my champion, into loading screen... and I bugsplat.

"Ok no biggie I'll just reconnect"

I hit the reconnect button, League logo pops up, full-screen window appears.

"Alright, ready to go"

Full-screen closes on me, and the client goes back to normal. Not "Game in Progress", not a "Reconnect" button, just straight up the normal client, as though I'd never even queued up.

"Ok, I guess the match was dropped by the server. Whatever, I guess I'll go play something else."

Half an hour later, I come back to this bullshit.

Riot, why the hell should I have to take the rap for your faulty programming?