Hi, 

from Hi-case we understood that this is product defect. (Zurich Patch 4). It will be solved in future release.

Workaround to fix this issue ->
1. Open https://.service-now.com/sys_ux_form_action_layout_list.do?sysparm_query=nameSTARTSWITHKnowledge%20Center%20Actions&sysparm_view=

2. Set the order field to 100