No detection by WinBox

Hi everyone.
I’ve noticed a bug when I upgraded two RB750Gr3 from 6.36.1 to 6.44.3 OS. These two routers are configured as BCP bridge, as Mikrotik’s case studies shows for establish a bridge between two offices using another private ISP network. From the first day to yesterday, with 6.36.1 version the software works fine, and WinBox detects both MAC and IP when I refresh the list of neighbors.
But with 6.44.3, the router configured as client is not detected. However, when I run pings from any computer on network, it does fine…
Also, the functionalty od the bridge is OK. No problem. The anormal thing is the no detection from WinBox.
When I use directly the IP of the router not deteected in the WinBox, the WinBox connects it normally…
Any ideas? Thanks a lot.
Miguel.

Check the output of /tool mac-server print. It should be allowed-interface-list=XYZ. Then, see whether the bridge interface is a member of that list: /interface list member print where list=XYZ. To be detectable by Winbox as neighbor, the device must permit access to mac-server from the interface to which Winbox is connected. But don’t blindly add the bridge interface as /interface list member of XYZ until you check that XYZ is not used in some of your firewall rules as in-interface-list or out-interface-list; if it is, it is may be better to create a dedicated interface list only for the /tool mac-server use. An interface may be a member os several interface lists at a time.

Hi.
I will try this and comment later. Thanks a lot!!
Miguel