After migrating a Domino environment to 12.0.2 and upgrading the Notes Clients we could see the following issue. In an application where documents from another application should have been displayed in an embedded view the embedded view was not filled and kept empty.
I received the following information after opening a case:
—> Yes, its know bug in Notes client 12.0.2. This issue has been reported via SPR#PSHECLULWM and is being investigated by HCL Software. Customers can subscribe to this defect article to keep track of updates. It is being Proposed to be fixed in 12.0.2 FP1.
https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0101979
We could not reproduce this issue with 12.0.1FP1. So beware to upgrade your Notes Clients if you use embedded views !!
After creating this blog post I received 2 informations ( thanks to Reid Canavan and John Paganetti ): try to put either one or both entries to the NOTES.INI of your client and restart HCL Notes. this should fix the issue.
EnableExtendedFindByKey=0
Tips and News for Collaboration solutions 
Add this to the notes.ini on the client to work around this: EnableExtendedFindByKey=0
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Hi Reid,
thanks for this hint – will try. But in our case not one categorie is displayed in the embedded view.
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This is a major bug that is stopping us from deploying 12.0.2. The vast majority of our applications use embedded views.
another defect article here:
https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0102043
We also had to roll back a Verse upgrade due to users email signatures not being added.
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