Unable to see all options in the subcategory dropdown

[garytlawson]

Hey guys, I'm working on building a condition that includes several categories and subcategories but when I select the subcategory dropdown I only see up to the letter O. I believe there is a setting that's not correct and it's displaying all variables in my environment. I've attached several pictures of what I see when building the condition and am wondering if there is a way to filter out all non-subcategory data.

Any help is appreciated thanks in advance!

[GB14]

What is the type of the field? could you share the picture of the dictionary? 

[garytlawson]

[Dr Atul G- LNG]

Please have a look OOTB Sub category .. seems cat - sub cat mapping is missing.

[garytlawson]

incident.subcategory is dependent on category.