I have 5 Mikrotik routers and multiple Apple devices on the network. And while I love Mikrotik, users are complaining, asking me to change network hardware to a vendor with full Apple devices support :/
Well, that's not clear. According to Wiki the spanning tree protocol applies to CSR models, which is not my case. Are you saying every router would get that change?Did you read the release notes? Noticed anything about spanning tree? Did you try to disable spanning tree on the bridge?