Hi Bill, 

do you need a close action at all?

when I have this structure, users can close the top popup and all others remain open. 

No. I only close the top most and it no longer works.

Hi Bill,

Thank you for letting us know. I have a couple of questions:

1. 
   

   Are you able to reproduce this issue on a simple test page? (preferable without any data models, only the pop ups)

   
   


2. 
   

   If yes, could you provide the XML of that page?

   
   


3. 
   

   Do you see this issue in a sandbox? If yes, can you update to the latest release 11.2.7 and let me know if the issue persists? A very similar issue has been fixed in 11.2.7 and I’m wondering if that solves the issue in your case, too. As a reminder, Salesforce does NOT allow reverting back to prior versions of managed packages. Skuid always recommends installing new versions in a non-business critical sandbox environment to test all mission critical functionality before installing into a production environment. We also recommend that you update out of date themes when you upgrade.

   
   

Thanks!

Luzie

After I upgraded to 11.2.7 - AUGUST 6, 2018 the issue went away.

Great, thank you for the quick feedback!