I mean the bonus that is applied to your city if you choose to have for example "Produce Research" or "Produce Mana" active. This bonus is gone (in numbers but not as icon in the building queue) after loading a game and it's not only auto-save as it seems, I tested it with all saves (quick, normal, auto) - same problem.
Also it will remove all your "continuous building" bonuses (only when you check the numbers, not the icon from building queue), like research.
Legendary Heroes v.1.0.0 Every time after I load a save-game all the continuous build(ings) bonuses in all cities are not applied anymore they are still "in build" but the numbers just don't add up, I'm not sure if it's just a display bug but after removing and adding the continuous build again the bonus is calculated correctly again. Known bug?