Ok - some minor details changed just to avoid completely outing anyone.
So for the past two years, like many schools, we have had a Whatsapp chat group for parents. This parent is the class rep and is on the whole pretty organised and helpful. However they will all too often use their kid as a pretence to post videos or photos of what they are randomly up to, e.g. 'oh here we are at some lovely place, X wanted me to post this to show all his/her friends'/'oh look what X is up to, X wanted you to show his/her friends'.
No one else does anything like this and fundamentally these appear to be stealth brag posts and there is little engagement or reciprocation - maybe a few token heart emojis. It's been going on for 18 months now and I know I should ignore it but I'd rather it didn't happen and I just think it's pretty poor behaviour. The Whatsapp group is for admin and keeping up to date with key events, parties etc. and whilst there is jovial chat/networking, these posts randomly appear and just put an awkward stop on any other discussion. One person recently alluded to it straight after a stealth brag post when they commented on the group if someone could summarise which birthday parties are upcoming as they have lost track with the non-school related posts.
The thing that really tipped it over the edge was that on a couple of occasions recently, this parent has randomly decided to coincide their daily activities with some of the school trips the kids in the class have been on and will creepily post pictures of the kids from a distance. AIBU to think this is really odd behaviour? If you have free time, why would you choose to spend it lingering in the shadows around a class trip your kid was on and then send blurry pictures of the kids from afar? Yes fair enough I should just ignore it, refrain from engaging as I am already doing and move on with my life but at the same time, is this not just mentally bizarre behaviour?!