Support gems lost on refunding ascendancy that grants skill

Noticed this on Acolyte of Chayula and this happened twice (reproducible).

Process:

1. Have Waking Dream ascendancy which grants Into the Breach.
2. Slot a support gem into the skill Into the Breach (for me, Magnetism).
3. Refund Ascendancy point for Waking Dream.
4. Reallocate Waking Dream

Result:

Into the Breach skill is no longer in skill menu (expected), but "previously allocated skill" holding the support gem is not present (unexpected). On reallocating, Into the Breach has no support gem.

While Into the Breach skill is of course no longer available, unlike when unslotting a weapon where the support gems remain in the skill menu, here the support gem disappears entirely. Reallocating Waking Dream provides an empty "Into the Breach" skill.