0.5.4-alpha from f-droid works!
Also works for me with Davdroid 0.5.4 from F-Droid (and on the server side, OwnCloud). Great work, thanks!
@rfc2822 Thanks for you attention to this issue. I got it to work. Uninstalled both apps, rebooted phone, reinstalled both apps and now it is working. Must have been some hiccup that needed a reboot to clear out.
Guess it’s the same issue as #482. Please follow up there.
This seems to have been fixed in SOGo 2.3.7.