Mikrotik bridges are unlike a dedicated switch (e.g. Netgear) - they are effectively a managed switch within the Mikrotik. There is a good explanation https://forum.mikrotik.com/t/routeros-bridge-mysteries-explained/147832
You shouldn’t attach IP addresses to members of a bridge, just to the bridge itself.
For IP services on the Mikrotik to be accessible to/from the bridge the traffic has to be untagged - this can either be done using the cpu-to-bridge port untagged (i.e. an access port or the native VLAN of a hybrid port), or using the cpu-to-bridge tagged and an /interface vlan to unwrap it.
If you wanted VLAN100 within the switch to be presented untagged to the CPU and ether1 it would require the following:
/interface bridge
add name=switch pvid=100 vlan-filtering=no
/interface bridge port
add bridge=switch interface=ether1 pvid=100
/ip address
add address=10.10.100.1/24 interface=switch
/interface bridge set switch vlan-filtering=yes