Yes, my mother too. She will, when on good behaviour, say the 'right thing' but it will be as perfunctory as possible and she will quickly move on. "Well done" or "that's good". I know that she is towing the party line but doesn't want to give me the satisfaction of saying anything more effusive.
She will regularly find subtle ways to criticise my looks and parenting. She absolutely loves it when my children do something that she can find a way to blame me for, and it's usually something like 'that's because you're far too strict/too soft/obsessed with healthy eating/give them far too much junk/etc'
In fact, how I parent my children seems to be the thing that sticks in her throat the most. Nothing i do ot who I am as a person ever seems to bring her any pride. I get the impression that she resents me, deep down but that she also loves me in her own weird, damaged way.
In the past I used to get very hurt by the comments she made but I've actually learned the trick is to be as unbothered and as greyrock as possible.
'Your face looks fat like that'. You reply, nonchalantly 'oh do you think so? It's funny how people see different things, isn't it?'
If she says 'I don't like that outfit on you'. Then you say 'oh don't you? I love it!' And just act as if you don't care what she says. I actually don't care what my mother says now. She makes her comments, I say 'oh right' and change the subject breezily and remind myself that she has a problem and it's not me.