the phase gate seems not to work properly if the sb is built near the sun, i've noticed it too. maybe because the sun is not like a planet, so maybe some properties must be setted in a different way 
in my opinion the duration of the effect is too short related to the cooldown. i've noticed that the ability is the same as the one of the capital ship, but in my opinion a starbase is... cooler than a capital ship 
so maybe if the sb creates a phase gate it might be more stable than the one of the cs... i'd prefer the previous choice, making the ability passive...
