[BUG] PacketRusher does not always handle received messages in order

[linouxis9]

Describe the bug
PacketRusher does not always handle received messages in order.
Eg: UEContextRelease will be handled before the DownlinkNASTransport, so context / communication with UE will be freed and we'll unable to pass down the NAS message to UE.

Expected order:

Handled order:

[LSKhappychild]

Is there any progress on this?, as I think this is kinda critical issue