Crash on iOS 14 -[SexyTooltip observeValueForKeyPath:ofObject:change:context:]

[failynsedik]

Hi. We're getting a lot of crash reports on -[SexyTooltip observeValueForKeyPath:ofObject:change:context:]. On Firebase, it seems like it mostly happens on iOS 14 devices.

Here's one of the crash reports.

EDIT:

• Crash is consistent and can be reproduced upon scrolling down the tableview.
• Crash happens on iOS 13 as well, not just on iOS 14.

[failynsedik]

I tried to directly copy SexyTooltip files on our project, just to edit some codes while debugging, but I was surprised that the crash was gone after doing that. Anybody has an idea why that is?