Just a quick update. I watched my crafting closely today. I had five characters who had the same issue with the Enchanting box not having a quest marker. All five had the health glyph writ. I had other characters who had to craft a stamina or magicka glyph, and the quest marker did show up properly for them.

None of my characters today had an issue with the Jewelry box not showing a marker. But all of the ones I thought to check either had crafted three rings, or a ring and a necklace. So it's possible that it's the 2x necklace quest that gave me the problem before. I should be able to confirm tomorrow, as a couple of characters should get that quest.

There actually was a moment with one character, where the Enchanting quest marker appeared for a split second before disappearing again. I was standing in front of the boxes, reading through my loot log to confirm which glyph I had crafted, and I noticed the marker blink in and out of existence. It was there for maybe 1/10th of a second. I barely had time to realize it, and it was gone again. I don't know if I was moving my camera at the time. Maybe a weird visual glitch where it appears from a very specific angle, and if you're a pixel off, it disappears?

I can say for sure that this visual glitch is happening with the CP150/Platinum Jewelry writ that asks for three rings. It is not happening with the other two CP150 Jewelry writs, and it is not happening with any of the lowest tier (Pewter) Jewelry writs.

While I had the writ quests still active on a character with all max crafting, I decided to run around and test a few other zones. In West Weald, High Isle, Northern Elsweyr, and Bangkorai, I get the turn in marker above the Jewelry box. In Solstice, I do not. Standing in Sunport, I went through every completed writ quest and selected "Show on Map." All of them point me to the crafting building in Sunport, except for Jewelry, which points me towards the turn in location for the first zone of that character's faction.

I don't know if this is the root of the problem or not, but there seems to be inconsistency in where the writ quests tell you to turn them in. I jumped zones with completed writ quests on some characters. Some quests would show the zone I was in, others would show Glenumbra/Auridon/Stonefalls, depending on the faction. What's even more strange is that the same quest behaves differently, depending on the zone. I had an Alchemy quest that, in Solstice, was actually telling me to turn it in there. But when I moved to a different zone, suddenly the same quest was telling me to turn it in at my faction's first crafting zone. Yet, I still had a quest icon above the box in the zone I was in. Solstice is still the only zone where I have ever noticed missing quest icons above the writ boxes, so it's possible that that glitch is unrelated to where the quest seems to want to be turned in.

At any rate, I think I've exhausted my desire to investigate this further. Now that I'm aware of it, I'm more careful when turning in my writs in Solstice. Hopefully, this post has made others aware so they can watch out for it themselves, and not miss turning in a writ because the visual indicator is missing.