Doesn't show up all columns in matrix coditional formating

Hello all Power BI enthusiasts,

I am making a huge matrix comparing several APIs that provide current climate data and for that, I am checking which values that deviate more than 10% from the real value. I am using Conditional Formatting to display these values.

In the "Fields Formatting" field all columns appear (I could change column headers), but when I go to the "Conditional Formating" field only the first 11 columns appear.

Does anyone know a solution to this problem?

Thanks a lot,

Simao