Field value being set to blank

Users are reporting strange behaviour with the AGREEMENT form that contains an ASSET subform.

Here are the steps to create the behaviour

Go to https://creator.zoho.com/essistmgmt/assets/#View:CONTRACTED_ASSET_View. Note there are 29 records
Edit the A059 record at https://creator.zoho.com/essistmgmt/assets/AGREEMENT/record-edit/AGREEMENT_View/896426000014604156/

Change some of the fields and update the form without adding or deleting from the subform

Go to https://creator.zoho.com/essistmgmt/assets/#View:CONTRACTED_ASSET_View. Note there are now less records. I am expecting to see 29 but now see 25.

What I have found is that when you edit an agreement, the assets related to the agreement will have the ASSET TYPE set to empty. The view has a filter which results in seeing less entries. The strange thing is that I cannot recreate the issue from my developer account. I have used test accounts and seen other users recreate the issue. Both the AGREEMENT and ASSET form are shared to my domain so I don't think it's a permission issue. Also, I cannot recreate the issue with my account so I don't think it is a script issue either.

I have checked the code and cannot find references to where the ASSET TYPE is set to null or an empty string. Can you please investigate?

Note, the application is shared.