T1 ability upgrades are not highlighted when an ability point is available.
When you want to downgrade an ability from T1 to T0 after accidentally picking it, it appears as you still have it upgraded, despite getting the point back.
From what I can see T2 and T3 upgrades work just fine.
When you want to downgrade an ability from T1 to T0 after accidentally picking it, it appears as you still have it upgraded, despite getting the point back.
From what I can see T2 and T3 upgrades work just fine.