It's an issue...
I opened up a support case - got a little angry, because I couln't find any hint/info regarding this issue in the KB or anywhere else.
Cost me about 6 hours research and thinking of beeing my fault/misconfiguration.
McAfee's Answer (not working):
Tier 3 confirms the condition reported is due to a known issue with 9.4.1. It will be resolved in 9.4.200 (patch 2).
Issue still exists. McAfee is escalating to tier 2.
Anyone else has problems blocking iDevices with DLP 9.4?
I have the same issue with DLP 10 Patch 2. Any Luck or do you have any work around