Did you fix all the bugs with Vasari research?  This appears to be endemic to the Vasari as a whole now.  For example, I just built the Phase Stabilizer add-on to the Starbase, even though I don't have the research completed (or started even, due again to insufficient weapons labs built, though they have been put in the que and paid for).  It is further bugged in that it appeared to "build" instantly, and has the symbol that signifies a completed add-on / research over the icon.  Additionally, it doesn't work even though it seems to be "built" (though logically it shouldn't)  I tried jumping a fleet to the system from another one with a phase stabilizer built, and it didn't work.  Even when the research for the starbase-mounted phase stabilizers finished, it does not work right away.  The upgrade progress bar then immediately started building, and in about ten seconds it finished and the phase stabilizer worked normally.