Pi5 does not always connect eth0 at boot

I have been using connman for a number of years on my Pis without
problems. The Pi5, though, I notice that it fairly regularly reboots
and does not get a valid IP address even though the cable is connected
and there seems to be no problem on the network. None of the other Pis
(3b+.Zero2W, 2b) fail to grab ab IP at boot. Is there some sort of
race condition that is causing it to not grab an address. If I restart
connman or force the interface down then up, it grabs an IP and all is
well. I have noticed this with the latest connman:
connman-git/now 1.42.r383.g49b16df3-1

Apr 12 12:20:02 pi5 connmand[54339]: Interface eth0 [ ethernet ] state is ready
Apr 12 12:20:02 pi5 connmand[54339]: Interface eth0 [ ethernet ] is the default
Apr 12 12:20:02 pi5 connmand[54339]: Interface eth0 [ ethernet ] IPv4
online check to http://ipv4.connman.net/online/status.html failed:
-22: Invalid argument
Apr 12 12:20:02 pi5 connmand[54339]: eth0 {add} address
169.254.184.199/16 label eth0 family 2
Apr 12 12:20:02 pi5 connmand[54339]: Interface eth0 [ ethernet ] IPv4
online check to http://ipv4.connman.net/online/status.html failed:
-22: Invalid argument

down then up:

Apr 12 12:23:00 pi5 connmand[54339]: eth0 {update} flags 102467
<UP,RUNNING,LOWER_UP>
Apr 12 12:23:00 pi5 connmand[54339]: eth0 {newlink} index 2 address
D8:3A:DD:D2:AE:3A mtu 1500
Apr 12 12:23:00 pi5 connmand[54339]: eth0 {newlink} index 2 operstate 6 <UP>
Apr 12 12:23:00 pi5 connmand[54339]: Interface eth0 [ ethernet ] state
is configuration
Apr 12 12:23:00 pi5 connmand[54339]: ipconfig state 3 ipconfig method 1
Apr 12 12:23:09 pi5 connmand[54339]: Interface eth0 [ ethernet ] state is ready
Apr 12 12:23:09 pi5 connmand[54339]: Interface eth0 [ ethernet ] is the default
Apr 12 12:23:09 pi5 connmand[54339]: Setting domainname to local
Apr 12 12:23:09 pi5 connmand[54339]: eth0 {add} address
192.168.1.128/24 label eth0 family 2
Apr 12 12:23:09 pi5 connmand[54339]: Interface eth0 [ ethernet ] IPv4
online check to http://ipv4.connman.net/online/status.html succeeded
Apr 12 12:23:09 pi5 connmand[54339]: Interface eth0 [ ethernet ] state is online

Is this a problem with connman or the Pi?

Keith