iOS 14: applications with sheets containing large number of objects crash in both Safari and Qlik Sense Mobile

[Daniele_Purrone]

Applications containing sheets with about 20 objects or more crashes on iOS / iPhone OS, both in Safari and Qlik Sense Mobile (client-managed and SaaS). 

Possible symptoms:

• in Qlik Sense Mobile the Qlik Sense app gets closed with warning about memory issues
• in Safari, the app gets closed with a "A Problem repeatedly occurred" error

The issue didn't happen in previous versions of iOS.

Environment

• Qlik Sense Mobile  client-managed and SaaS, any
• Qlik Cloud  with iOS/iPadOS 14
• Qlik Sense Enterprise on Windows with iOS/iPadOS 14 
• Qlik Sense Business with iOS/iPadOS 14

Resolution

R&D has been investigating this, and it looks like it's a third-party bug from Apple's side. Possibly due to some of the latest security updates for the Webkit in iOS 14, since the issue doesn't happen on older versions of iOS, in Xcode's emulating environment, nor on Android.

This would make it beyond our control to fix it until Apple addresses the issue.

What will help in this case is redesigning the application, reducing the number of objects per sheets to about 15-20.

So, please, test splitting the objects in separate sheets, and check if the issue still happens.

Information provided on this defect is given as is at the time of documenting. For up to date information, please review the most recent Release Notes, or contact support at support.qlik.com with the ID QB-5718 for reference.

Cause

Third-party bug