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USB-C connected laptop connectivity loss

Hello, looking for some extra eyes on issue.

New site with our standard ISE config applied in closed mode.

Devices are connected as such, 4500 switch > ip phone > USB-C dock > pc

When pc is connected to dock, will authenticate via dot1x successfully and work without issue for several hours\days, but at some point will disconnect from the wired side and swap to wireless. 

Switch shows active authentication session is maintained for phone and pc, but the pc does not have an ip allocated in the auth info.

There is not a reauthc attempt is ISE for either device when this occurs. Verified that EEE is off on the phone, but is on for the laptop\dock.

Phones are running 12.1(1)

 

Thanks

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