mana bonuses are buggy. It says it gives 3x and the preview for income gain before buying the building shows what I assume is the "correct" value (for "buying 3 of this building at once?"), but when I actually by it the income gain is less than advertised (I think it's still increased, just to 2x instead of 3x. the building icon says 3x though, even though the income is wrong.)
Note that this does not always happen, just most of the time, but SOMETIMES (for some building types? idk. hard to test), sometimes it gives the full bonus I saw advertised prior to purchasing.
Also, for beacons, I think those work correctly but the description doesn't update properly for the T2/T3/T4 "multiplicative" producers. I'd also suggest making it clearer that (1) beacons don't affect mana or knowledge structures (at least I think they don't?) and (2) that beacons affect a full 3x3 area (not just "adjacent" but also "diagonally adjacent") and that they stack multiplicatively with other beacons (I assumed these things, but the game has a VERY high time cost for finding things out and no way to undo mistakes mid prestige. Hard to carefully plan when you don't actually know all the rules.