We are running RouterOS CHR, unlimited license on KVM (Proxmox VE).

Simple queues appear to be broken, was running 6.37.1 and still broken in 6.38rc25.
Target download is always 0 bytes, target upload appears to work as expected... Unfortunately no response from support@mikrotik.com so I'm posting this here to establish if anyone else has noticed this behavior as well...

PS: Yes, moving this queue to the top of all simple queues and even disabling all others still doesn't apply the resource restriction. Setting up queue trees works perfectly...