iron 1 rank silver 4 mmr getting matched with plat players

Okay so recently i entered my placements and i dodged a game during them, my current rank is iron 1 and i have silver mmr. the weird thing is im getting matched with low plat high gold players. I have no clue how this is happening and im curious if its a bug or something. Does anyone have an explanation or something or someone that can give some clarity to my situation.
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