Frost Giant faction defecit spending.  Season 131, using frog's 1.19 build and Heavenfall's mod plus ecomental mod.  Previous game also had similarly high deficit spending by the same Frost Giant faction.  The other factions I met have reasonably normal gold/research values.

Frost Giant faction power reflects that the gold deficit has been put to use.  Previous game also has similar unusually high Frost Giant faction power. 

Note my faction power is very low because I'm trying a One City Challenge in this game (only settled 1 city).  In previous game where I settled normally the Frost Giant faction Power was 6-7x mine, and the Angel's was ~= to mine.

Not sure if this bug is from vanilla or from Heavenfall's mod.  I suspect vanilla but no proof.

Edted to reflect Heavenfall's response below

Thanks for the swift reply and look-see into this Heavenfall!