Thanks for joining the thread and for sharing your workaround to be able to print your invoices, LeadershipWorks.

There are early indications that Apple are going to address this in the upcoming updates to MacOS - tentatively planned for November and as this is external, this is something we don't have visibility on.

This issue is not QuickBooks application specific, and hence no fix could be provided from us however, to keep you back to business, you may follow one of the suggested workarounds provided by my colleagues above to be able to print your invoices via PDF. 

Feel free to post again if you have any other questions, we're here to help.