TapResearch iOS SDK 2.5.8 Crash: [TRManagedThread start] --> UIKitCore -[UIApplication _stopDeactivatingForReason:]

[ckwangpg]

Hi TapResearch Team!

Our app recently updated the TapResearch iOS SDK from 2.5.5 to 2.5.8 and then this crash around UIKitCore -[UIApplication _stopDeactivatingForReason:] started to appear. From the crashlytics report, it seemed to be only observed on iOS 15.7.2 - 15.7.5 players.

We've also managed to repro the crash, and here are the steps:

• After the video ad appears, tap on the ad for more than 5 times.
• Tap on home button multiple times until the video freezes.
• Continue tap on home button multiple times, and the application will crash

Also this is the stack trace we're seeing on xcode upon crashing :

Could you please take a look and let me know if there's any suggestion? Thanks!

[philip-tap]

Hi, @ckwangpg

We are looking to reproduce the issue and resolve why we are crashed in this case. However our platform doesn't currently provide any video ads in our service. What video ad in your steps are used during the reproduction, and is it possible we are caught up in memory pressure alongside that video service?

[ckwangpg]

Hi, @philip-tap , Thanks for the response. Here are some more details after we looked into the stacktraces:

• For context, we often see this crash often after we’ve shown ads and the client has experienced memory warnings
• About 75% of the crashes are iPhone 7 and below; and many do not have a lot of free memory
• Could y’all try to set up memory pressure situation, along with backgrounding/resuming, and see if you can reproduce the crash on your end?