Thanks for the report. The longevity and call the beast tide is definitely a bug. The reincarnation age is intentionally pushed forwards which will make more sense as act 3 is released.
Viewing post in Cycle of the First Dawn comments
Another thing I just found
By doing a F5 while on act 2, the longevity went from 1377 to 1334. Importing a save from the same life didnt fix it, but funnily enough, once I reincarnated, it went back from 1334 to 1377.
Edit: Its a lot deeper than I thought. So, the longevity loss is caused by, after completing act 2 I assume, reincarnating manually. Some of the longevity just is gone, as I had received it back after getting the last investigation, though now a bit higher at 1380. Another thing is that it doesnt only happen at F5, by importing a save, on the current life, more of your longevity is eaten, but given back once you reincarnate. Hopefully this help you hunt down the bug