Ikea Bulb keeps flashing after sorting out issues

I had a couple of brief power cuts today and afterwards a few of my Ikea zigbee bulbs stopped responding to HA. I managed to fix them all by removing them from HA and re-pairing. The final bulb was upstairs but my HA machine and Zigbee co-ordinator were downstairs, so I after putting the upstairs bulb into pairing mode I managed to re-pair it by holding the co-ordinator next to one of the downstairs bulbs, the downstairs bulb flashed a couple of times and after a few seconds the upstairs bulb was paired and all was sorted.

The issue I have now is that weirdly the downstairs bulb, every 10 minutes or so, will now flash a couple of times, then go back to whatever state it was in, similar to what it did when I used it to pair the other bulb. It keeps doing this and I can’t get it to stop and I don’t know why it’s doing it. Any ideas on what may be going on and how to fix it please?

Thanks.

BTW, just incase this helps in any way. The downstairs bulb I mentioned was one of the other bulbs I had also just re-paired, before using it to re-pair the upstairs bulb.