Issue Description:

If installed mod lostcities and bop and used level-type "lostcities_bop", the biome "river" is shifted away from the river basin (biome shift from the river generation)
The author of the LostCities says that he does not control the biomes and his mod is not the reason for this problem (but only his level-type "lostcities_bop" problem is actual)
McJtyMods/LostCities#110

Steps to reproduce:

1. Install lostcities
2. install biomes o plenty
3. change level-type to "lostcities_bop"

Additional Information:

• fml-client-latest.log or fml-server-latest.log:
• Screenshots:
  
  
  fml-server-latest.log

Affected Versions (Exact numbers, do NOT use "latest"):

• Biomes O' Plenty: 1.12.2-7.0.1.2399 (on 1.12.2-7.0.1.2402 also actual)
• Minecraft: 1.12
• Forge: 1.12.2-14.23.4.2760

Closing this because we either can't/won't fix it or it's not an issue in 1.13

This is not a minimap problem; when using any biome display command, the data remains the same. And if you edit topblock with biometweaker, then it is edited outside the baisin of the river (yellow marker).