Yes, still seeing 403 errors for Facebook crawler as of today (May 5) - support case created.
Hi @bob-1011, welcome to the Vercel Community!
I recommend checking the Firewall section in your Vercel dashboard and then setting a rule for the Facebook crawler to bypass the Firewall. Please note, this may lead to more than usual traffic and I only recommend doing this if you are able to identify the exact user-agent and bot in the Firewall dashboard that you want to allow.