I'm a fairly new manager, I was promoted although we were never in the same role, theirs works alongside where mine was just one rank lower (relevant only to state we didn't start out in the same role). We never really spoke much due to their coldness though. We've been with our employer the same amount of time.
This person has always had an attitude towards me but it's got worse since I've managed them. They've coasted at times and I've had multiple people bring it up to me, they don't always do what I ask unless asked several times with it in writing, I've had to bring up performance issues on several occasions, they've then tried to ice me out of the team by acting like it's all been without warrant (eg. now she's a manager, she's a real bitch kind of thing) and it's worked with a few colleagues. Although I've stopped caring about this part.
Today I've reached my limit, perhaps due to a horrible few weeks with work. We had a 1-1 and I was asking about whether I could help them with anything, how were they doing with everything since we've had changes this year, etc. Their whole attitude was condescending and just so blunt and short. Rushing me through the discussion by saying they've been here, done that and don't need me to do anything apart from leave them alone, essentially. The equivalent of tinkly laugh when I asked if they had any comments on if/how I can be more effective communicating with them.
I'm struggling to think of how to bring this up other than in our next 1-1 saying that I've noticed an attitude and just want to get anything out in the open and clear anything up so we can get it out of the way as I don't want it to continue. However, part of me thinks they will have satisfaction in the fact I've noticed it. So far, I've just been nice at all times and pretended I haven't noticed.
Any suggestions?