When I try adding my KolabNow account via "Add Account" with the account type " Kolab Groupware Server" in KMail/Kontact, all the text fields are missing from the "Personal Settings" window, only the descriptions for them ("Name", "Email", and "Password") are present. The drop down for the Kolab version still works (can switch from "v2" to "v3").

I only have once instance I can run so maybe someone can verify if this is KDE wide or just with my distro (OpenSUSE Leap 15). Problem version of KMail is 5.7.3. A working version (on my other machine) is 5.5.2.

I can work around this by configuring via Kolab in other applications of Kontact first (such as Popup Notes) and just adding a SMTP account manually for email but if this isn't an isolated issue, I'd really like make sure it has/gets a bug report (I didn't see one when I checked).

Interested too.

I'm also experiencing this.

New to linux, Tried many distros, but fell in love with KDE Plasma Desktop.

Moving from exchange to Kolabnow, and would like to use integrated software.

This has been reported as Bug #401557.

I was able to work around this problem and configure my Kolab Groupware account via KNotes.
It's currently syncing so seems to have worked.