Auto-Repeat: Due_date wrong for Sales Invoice

I use Auto-Repeat for monthly Sales Invoices (Rental) creation.
This month the due_date’s of the sales invoices are not relatively set.

In the master Sale Invoices the posting_date and due_date have difference of 10 days. This month the dates where the same. Also the posting_time field is not used from the ‘master’ but from the schedule run.

In the past it had worked as i expected with relative dates/times.

Installed Apps
ERPNext: v11.1.36 (master)
ERPNextFinTS: v0.0.1 (develop)
ERPNextSwiss: v1.4.2 (import_history)
Frappe Framework: v11.1.33 (master)

Can be fixed by:

The “posting_time” will be set same as the schedule run time but I think this can be ignored