just tested the new changes in beta 2.5 with the phasegates on starbases.
the ability now needs 150 antimatter but the upgrade does not provide any.
so you have to research and upgrade either vortex or shield to be able to use the phase gate and sacrifice one of those abilites at the same time.
the ability should give at least 150 antimatter as the others do.
very easy to fix I think but crucial to gameplay 