CAN bus issue (addressing of packet order) still unresolved?

I came across this isse.

Money Quote:

Currently the MBED API has no way to address packet orders, either by specifying packet Tx must retain their order, or by allowing an app to check if the Tx buffer(s) has cleared before attempting to send the next packet.

I was wondering if this issue is still unresolved but could not find anything. Maybe some of you guys know something regarding this issue. Thanks!