Claster shared volume on Fibre Channel Modular Disk does not work properly when deduplication is on

Hello!

We have a WinServ2016 cluster (failover role) of four R730 nodes connected to the MD3820f on which the CSV is created. All four nodes can simultaneously transmit data to the CSV. Everything worked fine until I turned on deduplication for CSV. Now, the node that does not own the CSV does not access the deduplicated files through the FC, but does it via Ethernet (internode network). However, this node accesses files that have not been deduplicated through the FC.
If Dell once acknowledged this bug, please give me a link.