This appears on version 7.2 and the 7.2 beta with the Dojo. Haven't tested any other map types or versions.
When I choose Great Plains as the map type all ancient ruins are missing from the game and there is a graphical glitch anywhere there is marsh where the tiles are all black. Since there is always marsh in the lower right-hand corner of the map its a quick trip down there to see it.
On continents and old world the game works fine with the Mod and I can see marsh and ancient ruins still appear but on Great Plains for sure something is wrong.
When I choose Great Plains as the map type all ancient ruins are missing from the game and there is a graphical glitch anywhere there is marsh where the tiles are all black. Since there is always marsh in the lower right-hand corner of the map its a quick trip down there to see it.
On continents and old world the game works fine with the Mod and I can see marsh and ancient ruins still appear but on Great Plains for sure something is wrong.