So internally, we have been working on and testing this feature but it wasn't our intention or plan to have it go live with the update that went out today. There was a piece of script that was missing and caused the leaving match early penalty to be turned on when it shouldn't be. That's why it wasn't in the patch notes.
We updated the script, tested with QA and it's now disabled for all platforms. We don't have an ETA for if or when this would come out for real. Apologies for the confusion.
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