Hawho, that stinks. At times I have endured that to a lesser degree. My W would let me know stuff by saying it to the kids in front of me. Or barely acknowledging my presence.
I understand you wanting to leave the table but I am not sure it is your best move. My W was less aggressive in this so maybe my advice is not appropriate.
I used several approaches: # I ignored the information and if it came up again I stated she didn't tell me, though she may have mentioned something about it it sons. # I would pose a direct question immediately. She usually answered.In your case maybe you could do that and then state, that you posed him a question... # I directly told her if she had something to tell me I would only react to it if told directly . Of course i did this without the kids being there.
Things are better now. Not perfect but definitely better, so it can improve.
I know your issue is being ignored. It is tougher but people here have often said that people treat us the way we let them. We cannot force them to do something but we can decide what we will tolerate. I hate saying what I would do in your place because it is complacent,but maybe I would take h aside and tell him if he continues to treat you like that he won't eat with ye at mealtimes. Maybe I am being harsh as we are advised to ignore bad behavior and reward/encourage good behavior.
Best wishes
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together