The bug
Dark oak logs with a vertical orientation use the same map color as horizontal logs / dark oak wood blocks despite them having a different color on the top.
See also MC-165776
How to reproduce
/fill ~1 ~ ~1 ~6 ~ ~6 minecraft:dark_oak_log[axis=y]/fill ~7 ~ ~7 ~12 ~ ~12 minecraft:dark_oak_log[axis=x]Create a map
❌ The blocks have the same colors on the map despite them having different top textures
Created this issue as part of splitting MC-175228 into separate issues. @unknown, I hope it is alright that I have set you as reporter. Please let us know if you don't want to be the reporter.