High level (10) awakened added lightning damage support bug

A level 10 Awakened Added Lightning Damage Support gem says on its card that it grants "+2 to level of supported lightning skill gems" but it instead still only grants the +1 from the level 5+ support. I have not yet tested whether this is true for level 11+ or whether this is also true for awakened added cold or fire damage.

I can confirm the same for Awakened Added Chaos Damage. I've compared it to Awakened Added Chaos Damage lvl 9 and even on my skill DPS thumbnail it seems like only the added damage from higher level support gem is being calculated, not the +1 level.

Same issue with level 10 Awakened Added Fire Damage Support