Enum comparison in another thread

Unity Engine
1

I compare two enums with == operator in a thread other than the main thread.

if(leftChunk.Climate.ClimateType==chunk.Climate.ClimateType){...

It throws

ToString can only be called from the main thread.
Constructors and field initializers will be executed from the loading thread when loading a scene.
Don't use this function in the constructor or field initializers, instead move initialization code to the Awake or Start function.

The code is in a regular method.

2

I was mistaken. When I attach visual studio and stop at breakpoints, I receive this error. If I run without breakpoints I get no errors. That’s interesting.