Category Manager | Save as Copy or Save & New refreshes only the category

[rich20]

Steps to reproduce the issue

https://www.kunena.org/forum/k5-0-support/138275-k5-0-1-save-as-copy-is-not-saving-but-updating-current
Go to category manager and open a category
Click on Save as Copy or Save & New

Expected result

The copied category should be avalable

Actual result

Message
Category Welcome Mat updated

System information (as much as possible)

Joomla version:
Kunena version:
Php version:
Database version:

Additional comments