He still has pics of his ex on Instagram?

So I recently met someone on a dating app, we we have been talking for a while and my detective self found his Instagram and saw he still had pictures of his ex and her kids he also told me he had been single for a few months but based off of the last picture posted it had only been a little over a month… should I run now? Or am I overreacting?
He still has pics of his ex on Instagram?
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