SYMPTOM:
When users click on a clustered marker in an Advanced Clustering map on iPhone against Strategy 9.4.1 iOS Update 3, multiple information windows will be returned.
STEPS TO REPRODUCE:

CAUSE:
This is a known issue of Strategy 9.4.1 iOS Update 3.
ACTION:
Upgrade to Strategy 9.4.1 iOS Update 4 which has this issue solved.