I don't know if this is a glitch or I'm misunderstanding how the economy starbases work.
In a game I just finished, my tech capital had a research capacity of 2513. I had the planet surrounded by starbases, giving it a 182% production bonus, all of which seems to have been ignored.
I had industrial spending at 100% and the research spending at 100%. But I was only spending 1057 in research for the whole empire. The civilization manager also showed I only had research production of 1057. The planet in question was only spending about 700-800 (I forget exactly how much).