You have to make guest interfaces static and manually add them to bridge and filter them in vlan filtering.
As such:
/interface wifi cap
set discovery-interfaces=vlan241_mgmt enabled=yes slaves-static=yes
New ax devices able to grab datapath from capsman and use vlan settings from capsman. Older devices qcom have to use local datapath on cap.
/interface wifi datapath
add bridge=bridge1 disabled=no name=bridge1
/interface bridge port
add bridge=bridge1 frame-types=admit-only-vlan-tagged interface=ether1 internal-path-cost=10 multicast-router=disabled path-cost=10
add bridge=bridge1 frame-types=admit-only-untagged-and-priority-tagged interface=ether2 internal-path-cost=10 path-cost=10 pvid=242
add bridge=bridge1 frame-types=admit-only-untagged-and-priority-tagged interface=wifi1 pvid=240
add bridge=bridge1 frame-types=admit-only-untagged-and-priority-tagged interface=wifi2 pvid=240
add bridge=bridge1 frame-types=admit-only-untagged-and-priority-tagged interface=wifi15 pvid=247
add bridge=bridge1 frame-types=admit-only-untagged-and-priority-tagged interface=wifi16 pvid=247