3 Minute Dodge Timer To A 30 Minute Dodge Timer Later The Same Day?

Basically my question is if this is normal or should be? The first one was this morning in a casual game where our team got full autofilled and nothing was working, so I decided to dodge so we can all continue happy. Now I dodged my first placement game because of a Mundo bot pick on our team and me getting counter picked in the jungle, but the que timer went automatically to 30min. I expected 10min or 15min leaver, but 30 minute is a bit excessive, is it because I did it in ranked?
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