Hang on swipe in iOS 14.4

[toby5box]

Hi,

Testers on real phones and simulators (including me) are seeing a hang in swiping that does not occur on iOS 13.

At the same time, the log is spammed with these messages:

2021-04-14 15:04:48.790955-0400 BuildupDev[19163:221235] [Snapshotting] 
View (0x7f9e0a172800, BUTableViewCell) drawing with afterScreenUpdates:YES 
inside CoreAnimation commit is not supported.

(In our app, @interface BUTableViewCell : MGSwipeTableCell)

CPU is on 95% and memory continually rises so it looks something like an infinite loop.

Has anyone else reproduced this?

[toby5box]

Looks like the hang can be localised to imageFromView.

[TobiasRe]

I'm experiencing very similar behaviour. imageFromView causes the memory so spike until the app crashes.

[MortimerGoro]

I'm going to look into it. Can you reproduce it using any of the demos? https://github.com/MortimerGoro/MGSwipeTableCell/tree/master/demo/

[tylerweitzman]

I'm getting this too iOS 4.5 iPhone 12 Pro Max. Doesn't happen on simulator

[tylerweitzman]

I was able to fix by downgrading all the way down to version 1.6.6. Now it's no longer crashing, though it still hangs for a few seconds. Sadly, this is not very reproducible. I was able to consistently reproduce it only in a specific user's account in our app, and only by performing a fixed series of steps navigating to another view in the navigation, performing an action in that view, returning, to the root view, and then swiping and tapping.

[aldukeman]

Same experience here. App quickly runs out of memory and crashes. Will try reverting to 1.6.6