Bear with me one minute as I will type text, then go to my phone to add pictures.
I potted my K luciae for this summer in a heavy clay pot and it got morning sun, afternoon shade (house shadow) I tried to water often, but suspect it got very hot and dry at times. It's time to decide for winter indoors so I'm wondering about the health of it in general and specifically the two large fat stems. One has loose leaves and some damaged looking parts, And further down the stem, it seems its branches are a bit yellow in a way that the other stem branches are not. The second big branch has quite a lot of white powdery stuff near the young leaves- normal, or mealybugs? Pics to follow.

Overall

Looking ill?

Waxy plant coating or mealybigs?

I appreciate any feedback.

The one with the red leaves doesn't look quite right to me, but I'm not sure what may be going on. If you wiggle the stem does it seem firm?

This plant makes a lot of powder. There is no stage of life where there isn't a lot of powder on mine. It just got a lot thicker when it was growing a bloom stalk. Get an ice pick and tickle some of the powder and see if any move or crawl. If they don't, then I'd suspect the plant is producing it naturally. I have to move mine inside tomorrow. It's been turning redder this last month as the days got a bit cooler and shorter. Not as red as yours, though.

If you're worried about mealy bugs, get in there with a toothpick and remove some of the white stuff. Mealy residue will tend to be a little sticky and stretchy and clumpy, less like a pile of wax. Mealy bugs themselves may not be obvious by sight (and my sight is not great to start with), but if you rub some of the white stuff between your fingers, you will feel them as distinct hard objects. So that's how I usually confirm a mealy bug situation, by touch.

It looks like the leaves are letting go of that one stem because it has gone soft near the tip. Remove any leaves that let go easily (looks like you could grab one or two) and try to see if the affected part of the stem is advancing downward over time. You might choose to cut through healthy tissue below that area in order to avoid this.

Some of these plants are crazy clumpers. You might consider thinning out some of the competition in order to keep the bigger rosettes happy. The plant looks fine as it is, just mentioning this as an option to consider.

Thanks folks!