The following works properly with 7.10, no problems at all. However, upgrading to either 7.11 or 7.12 beta causes the network speed to barely above 0. Almost nothing works. I'm not sure if my config is bad, and it just happens to work on 7.10, or if something in 7.11/7.12 is broken.

Downgrading to 7.10 immediately makes everything work again.

Does anyone see anything obviously wrong with the config below?

Port 1 is connected to a managed switch that contains untagged vlan-1 devices and also trunk for vlan-2.
Port 2 is connected to untagged vlan-2 devices.


bridge
vlan-filtering=yes
frame-types=admit-all
ports = 1,2

port 1 (this is an access port for vlan-1 and trunk for vlan-2)
pvid 1
admit = all
ingress filtering = yes

port 2 (this is access port for vlan-2)
pvid 2
admit = only untagged and priority tagged
ingress filtering = yes

VLAN TAB in bridge:

vlan id 1 (dynamic):
current tagged = empty
current untagged = bridge, port 1

vlan id 2:
current tagged = bridge, port 1
current untagged = port 2

Unless you show full and normal config and indicate which device this is about, not much there can be said.

Vlan1 is a terrible idea for data vlans, its in the background for any bridge anyway, so change it to vlan10.
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The following works properly with 7.10, no problems at all. However, upgrading to either 7.11 or 7.12 beta causes the network speed to barely above 0.

Try 7.11beta or remain on 7.10 until the new bug introduced in 7.11rc and still present in 7.12beta has been fixed!

In 7.11 a lot is broken, 7.12 isn't out yet. Hope we get a fix in 7.11 soon, as my whole network is unusable.
Seems to be an issue with the brige

Downgrade to 7.11beta4 or lower.