Is there any change in Frappe Permission API after v13.42

I am facing some weird issues related to permission after upgrading from v13.40. e.g
System Manager and Account Manager cannot change customer’s custom docType fields. Payment Entry after changing reference (outstanding invoices) cannot submit document. "Draft"ed Sales order after 24 hr cannot be submitted. etc
All these are related to permission because Admin can do but other users cannot access. whereas previously system manager, account manager, account user had access.