Mega Shipyard Tech

[cooptimo]

So I've been playing a fair amount of Stellaris the last month, Federation expac is fun, all features seem to work. But in that time I've never gotten the tech to pop for a mega-shipyard. I'm in late game several times, only thing left are the repeating endgame techs. It still never pops. Is there a trick to it? Or is there a bug? What am I doing wrong?

[CrUsHeR]

https://stellaris.paradoxwikis.com/Society_research

Requirements: Mega-Engineering & Federations DLC
Modifiers for this to show up:

Pacifist: x0.5
Militarist: x2
Maniacal/Genius: x2
Galactic Wonders: x2
Master Builders: x6
One Vision: x6

However, if you have everything else researched, this should always show up. Because all repeatable techs have a modifier of x0.01, as long as any other repeatable tech is already rolled in this batch.