KB45847: Attribute element selector (filtering selector) shows the elements in the secondary dataset in MicroStrategy 9.4.1 - 9.4.1 HF3

SYMPTOM:
In Strategy Web 9.4.x, the elements in the secondary dataset are displayed in an attribute element selector.
 
STEPS TO REPRODUCE:
Follow the steps below to reproduce the issue with Strategy Tutorial project:

• Create a report, R1 which contains Subcategory attribute. 
• Create a report, R2 which contains Subcategory, and apply the attribute element filter on Subcategory to select ‘book’ element only.
• Create a document and add above 2 reports as dataset.
• Set the join behavior of R1 to secondary, as shown in the image below:
  

• Create an attribute element selector and choose both datasets as a target. Make sure to select 'Apply selection as a filter'
• Note that the attribute element selector shows the attribute element in R1 dataset regardless of whether the join behavior is set to secondary, as shown in the image below:
  

 
CAUSE
This is a known issue in Strategy 9.4.1 - 9.4.1 HF3.
ACTION
This issue has been addressed in Strategy version 9.4.1 Hotfix 4. Upgrade to this version to take advantage of the fix.