SYMPTOM:
Attribute Browse Sort is configured to be Descending as shown below:

But in Data Explorer, the attribute elements is not sorted in descending as shown below:

CAUSE:
This is a known issue in Strategy 9.4.x-10.x.
ACTION:
After careful consideration, Strategy decided that this issue isn't part of the foreseeable development roadmap of the platform so it won't be implemented..
WORKAROUND:
Follow steps below to make the Browse Sort work: