Mage Skeletons (Dead Reckoning) with Sire of Shards, Nimis Ring and Snakepit Rings

Okay, I see what you mean now. I don't have an alternate quality Summon Skeleton to see that for myself, so thanks for the examples.

It seems like the issue is with the UI aids checking the gem's ability to support the base skill of the gem, without also taking into consideration the alternate quality of the gem. While I suspect very few other instances of this exist, it's something that may be worth posting as a bug.

However, this behavior is still in line with the Mark quote, which was made before Heist and alternate quality gems were added.

"

The skill system really doesn't handle supports starting/stopping applying to a skill without actual gems being changed - the set of supports applying to a skill is determined at the time gems are moved, and the whole skill system relies on it being constant until gems change again.

On the other hand--with all the other work they're doing for PoE 4.0, it would be nice if things did work the way people want with things like Astral Projector. While it might be late for getting them to work on it if they didn't make changes like this, it might still be worth setting up a Feedback/Suggestions thread.

Imagine I've already done that and many other reports only to get rejected - most of the times without any explanation. It's such a pitiful and long story; I won't go into any detail anymore.
Game's good but not perfect. It kept me playing since 2013.