Dead Reckoning Not Consistently Summoning Mages

Last night, I finished Cruel Labyrinth on my Skeleton-based Summoner. Up to this point, I have been using the From Dust Unique Jewel to summon 6 Skeleton Mages at a time through Spell Echo. After completing Cruel Labyrinth and allocating Bone Sculptor, I intended to remove From Dust, but decided to keep the Jewel for now since I don't have anything better. Running around in Act 8, I noticed I have way more Skeleton Warriors than I really should, upwards of 6 showing up at a time instead of 1 like I should have at any time.
I have 2 Dead Reckoning Threshold Jewels granting me a max of 10 Skeleton Mages, a max of 11 total Skeletons, and Summon Skeletons is socketed in a Reverberation Rod with Minion Damage and Lesser Multiple Projectiles supports. I summon 5 Skeletons twice every time I use the Summon Skeletons Skill for a total of 10 Skeletons. However, if I already have a large number of Skeletons up, some of the next set I spawn are usually Skeleton Warriors, around 2-3 on average.

Bug report reference number: 1622615331