iOS 15.3 fixes an annoying bug that stopped HomeKit cameras from updating
(iMore iPhone)

What you need to know Some people reported that their HomeKit cameras were not updating correctly in the Home app. Thumbnails were not refreshing and displayed old information as a result. The new iOS 15.3 release appears to have fixed the static thumbnail issue. Install iOS 15.3 to get the fix for yourself. Apple`s new iOS 15.3 update fixes an annoying bug that caused some HomeKit users to report that their cameras were not updating in the Home app. The result was stale thumbnails that couldn`t be trusted with no way to fix things manually. Now, the iOS 15.3 update appears to offer some respite for HomeKit users. Multiple people have reported that installing the update has fixed things for them and that thumbnails are now updating as expected as reported by MacRumors. While not live as such, the Home app`s camera thumbnails are supposed to refresh intermittently but people have been complaining that they weren`t for some time. While Apple didn`t mention the fix in its release...