I have the same exact problem. Eero is my router (so no bridge), I am running the latest software (v6.13.3-11), have IPv6 turned off, but yet one of my devices (my printer) recently started showing only the IPv6 address and I can no longer connect to it.

add me to the list.  bridge mode....strangely, wired devices in the network show with their ip4 addresses in the app, but the wifi devices only show ip6.

Same here. 

Same here EERO Pro 6 K010011 BRIDGE MODE no ipv6 enabled on router and verified all device are getting IPV4 but EERO v6.14.0-4275  shows IPV6 address on the devices EERO is  wired to router.

Eero - PLEASE fix this!   I too am in Bridge mode since I prefer to have my main router handle all the routing and "smarts" of the network. 

Just spent WAY too much time isolating and troubleshooting 10 new devices added to the network by digging through mac addresses, when I should have been able to EASILY see the IPV4 addresses assigned to them through the DHCP server in the router.   

Having been using WiFi access points in a very similar bridge configuration since WiFi first came out, this is a very basic feature that Eero is missing.

And I could have sworn it used to work on an older software release.

PLEASE FIX THIS.   This is a common use case for your product and it's very frustrating!

Thanks