Hi Mahlon,
I did some testing and it appears that the estimates app ribbon item is no longer functioning correctly. Even on the original stock screen, the records are being displayed as undefined.
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I have created a ticket for the development team to investigate and will keep you posted with any updates via this thread.
As for sales orders, I was not able to replicate any issues on the stock or a copy of the View Contact screen. Can you think of anything else that may have caused this?
-Audisho