Root bridge has MAC address 0

RouterOS Beginner Basics
1

Hi, I have a CRS125 switch (running 6.48.4) which I’ve configured to have the lowest RSTP priority in my LAN. As such, it gets elected root bridge.

But the MAC address is wrong, it’s 00:00:00:00:00:00. How can I fix this? Thanks!

CRS125

Root Bridge		[x]
Root Bridge ID		3000.00:00:00:00:00:00
Regional Root Bridge ID	0.00:00:00:00:00:00
Root Path Cost		0
Root Port		none

HAPAC2 connected to CRS125

Root Bridge		[ ]
Root Bridge ID		3000.00:00:00:00:00:00
Regional Root Bridge ID	0.00:00:00:00:00:00
Root Path Cost		10
Root Port		ether1
2

Bump. @mods should this be moved to General? Thanks!