At the moment if you are using Home Page 2 (also known as Home Page V12), to use ONB, as of now, you need to upgrade to New Home Page V3. If we revert back to V12, will there are any issues in the New Home Page V3?
SAP SuccessFactors Onboarding
Onboarding does not support Home Page V12 and supports Home Page V3 at the moment. Once you upgrade to Home Page V3 there is no provision given to revert back to Home Page V12.
KBA , LOD-SF-OBX-HP , Home Page for Onboarding 2.0/ Tiles , Problem