My fault! I promise I tagged it at least once!Told ya!
Thank you very much, with all the try-edit-and-changes i thought I had tagged it.Bridge BR1 is tagged member only of VLAN 99 ... but should be tagged member of all VLANs which have their corresponding vlan interface (10, 20 and 30).
Thanks for the reference, it will be very helpful!If you're coming from Cisco, this may also be helpful for bridge VLAN configuration in MIkroTik.
https://www.stubarea51.net/2019/02/06/c ... and-vlans/