Loading screen - Stuck at 100%

Everyone join the game but me. It looks like it normally just keep loading while we are all already at 100%. I'm blamed for afking and it realy ruins my game experience.. It happens randomally. I've seen many complain about this bug, but no answer from riot (damm't), and Wondered if anyone has found a fix. Btw my connection is just fine so it doesn't have anything to do with this bug. Thanks.
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