At first, it had zeroes below my resources, then even they disappeared! All game long, it was empty though I had contact with 4 civs, trading with them even.
Lua.log had something in it that may be related and of interest:
[21481.891] Runtime Error: [string "UI/InGame/Popups/DiploTradesStatus.lua"]:435: bad argument #2 to 'ConvertTextKey' (Argument must be [boolean, number, or string].)
Lua.log had something in it that may be related and of interest:
[21481.891] Runtime Error: [string "UI/InGame/Popups/DiploTradesStatus.lua"]:435: bad argument #2 to 'ConvertTextKey' (Argument must be [boolean, number, or string].)