As far as I can remember, PMS has never bound to all network interfaces. And there is a logic to how PMS picks the NIC automatically, but there are cases where two NICs come out the same in that logic (since there is limited access to NIC variables through Java), so the first one enumerated by Java is picked (which does seem to vary over reboots).
As for the bug, please provide a debug.log
demonstrating the setting in the conf but not applied in the log.
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