Why does the computation time for boundingRect of NSAttributedString become significantly longer in iOS15.2?
This is the result measured with the iPhone simulator. (700 lines of Hiragana)
・iPhone13Pro, iOS15.0 : 0.012s
・iPhone13Pro, iOS15.2 : 2.318s
The sample code has been uploaded to github.
Compare iOS 15.2 with iOS 15.1 or lower versions.
https://github.com/kimuyonsoku/BoundingRectTest
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