Is your Hue setup linked via Matter to anything else? You mentioned Apple HomeKit as a possibility. My understanding is that the multi-admin portion of matter is very poorly implemented. If you have other ecosystems, you may want to pick one. To echo the comments from @JDRoberts above, I would just avoid it altogether though. Hue has one of the most stable and well supported proprietary APIs. You get more functionality and don’t have to suffer through the growing pains of Matter. My driver for Hue is better if you are staying with SmartThings.
Jump to this post to workaround a recent ST breaking issue.