There may be some other artifacts since after the new installation of Nextcloud no applications can actually be selected for use. No available apps are displayed.
Yum doesn’t remove the configuration files and there is not easy way to implement it.
You will find more info inside the post linked by Markus, but we do not have any plan to implement such feature.
I tried to understand the old thread. One question still I have…
Can I remove these files manually or not? Or should I even? Or do I have additional problems, e.g. during a reinstallation?
I noticed that despite deinstallation the servie is still there.