I thought this issue was fixed but I ran into a router (mipsbe) that would not take the MPLS MTU I was putting in until I added each interface specifically.
5.24.
“ALL” Did not work at my MTU I entered.
To reply to myself.
In the terminal /mpls interface, the setting *all was disabled (X), I didn’t even know it could be disabled, as you can’t do it in winbox at least in 5.24.