Instacart pre-IPO RSU policy

I just learned that if you quit Instacart before IPO, you lose all your stocks/options including the vested ones, which was a recent change in the policy (for new offers). So, if you work for 4 years and decide to leave pre-IPO, and even if the company IPOs the next day, you have 0. Is this a common practice? If Insta will IPO soon, why did they introduce this policy change recently? Update: based on some discussions with others, it seems like this is the policy introduced this year. It’s super sketchy. I’ll double check with recruiter just in case Update2: I checked with the recruiter, my understanding is correct. He tried confusing me by saying it’s good for employee for xyz reasons, but I studied my lesson this time and explained him it was the same with the old policy. Eventually he said he does not know much about ipo stuff. He did not even tell me the policy change in our previous chat while telling me all the good parts of the offer till I ask specifically at the end of our chat. It looks sketchy as hell and dishonest. I’ll skip the offer as god knows what other hidden things waiting for me ahead. #ipo #rsu #instacart