It’s best to post your new configuration whole rather than simply report that it’s “fixed” by some standard, so we don’t have to mentally integrate my partially-mistargeted advice with your prior configuration. It lets us start from the same basis point again.
In the meantime, I suggest that you study these guides:
- MikroTik’s documented bridge VLAN filtering info. This should allow you to put your ether2 + ether3 LAG into the bridge again. (This isn’t critical, though.)
- pcunite’s VLAN guide, being far easier to understand than the reference-level info in MikroTik’s docs.
- My own bridge-per switch chip article, which may be an eye-opener in your particular case; you’ve got three potentially independent LANs in an RB4011, and you need to configure it with that in mind. Bridging everything together as a single switch is possible, but there are consequences.