Curse Gems Socketed Into Blasphemy Do Not Appear in "Equipped Gems" List

I have Temporal Chains socketed into my Blasphemy meta gem. When trying to level up my gems, I click the "Equipped Gems" Pane, only to see that Temporal Chains does not appear in that list. When I select the "Elemental" categoryu, Temporal chains does appear, showing "Level 11 > Level 14", meaning the game does recognize that I have the gem, it just does not show up in my list of equipped gems. I suspect this is the case for all of the meta gems, though I have not tested this.