On the destroy buildings page the building numbers are missing thousandth separators.

On the advisor page there's a few fields that are missing thousandth separators.
At the moment I see the following fields are missing separators:
rank, land, all building fields, tech rate and oil

but there may be other that aren't showing for me right now.

For example.
"Farms 3316" should be "Farms 3,316"

There could very well be good (historic) reasons to leave this in place as it is. I just thought it looked wrong.

(Sidenote: I only play on FFA but I assume this behavior is the same on all servers)