Hi all
On the above link, I had reported that the multiple bridged network works, however with the upgrade to 23.05.2, I had noticed some 'weirdness' with the WRT1900ACSv2.
An ACER laptop (Win10) would crash. (TaskManager/Windows Explorer)
Android devices would not acquire an IPv6 address.
Both on the second bridge (wireless)
Switching boot partitions to the Master-r24238 (6.1.60 testing kernel), everything works (multiple vlans using bridge vlan filtering)
When you create another bridge under Network/Interfaces/Devices, the same MAC address will be used as the default BR-LAN bridge. After much exploring, change the MAC address (i.e. +1) on the new bridge, and everything works as expected.