Save and Close buttons are missing in PM form.
BizX - Performance Management - V12 Acceleration
Reproducing the Issue
Open the PM form and Save and Close button is missing on the PM V12 Accelerated form.
Please contact SAP Support to enable "Version 10 UI switch" in Provisioning and this would resolve the issue.
KBA , LOD-SF-PM-ADM , Admin Center, RBP, Permissions and Settings , How To