Connections between Bridge and non-Bridge interfaces are not accelerated correctly (the accelerated packet is cut through to the Bridge interface Br<N> instead of Bridge interface port ethX).
As a result, the accelerated packet enters the FireWall once again on outbound, which causes various inconsistencies.
In particular, when Application Control blade / URL Filtering blade is enabled, due to a required routing decision, this causes the packet to being Forwarded from SecureXL to FireWall (F2F) and being dropped.