My young toddler has been attending nursery for 6 months and 3-4 times he's had a poo in his nappy when I've picked him up.
The one time the worker told me as soon as I came in he'd just done a poo and she was about to change it, so it had been noticed. He's never had nappy rash or anything before, but today I thought I could smell something straight away, when I got home he'd done a really messy poo which had leaked all out of his nappy and he's a little bit sore. The nappy wasn't otherwise full and he'd been changed twice in 6 hours there (and already had a poo) so not like they're not changing him.
It's a perfectly nice nursery as far as I'm concerned, my older child went there too, nice staff etc. Never ever had this problem with my older one.
He does poo a lot, at least 2-3 times a day.
Not sure if I should mention it and ask them to keep a closer eye on his nappies or just put it down to one of those things.