I think this render issue may be caused by the specal aribic text 'ڿڰۣ—' at end of line break.
Zeta_mae
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Did you device or simulator is iOS 18.x.x ?
This is a FATAL error of UIKit framework.
I'm disappointed in Apple's work efficiency in solving the issue.
I have got some workaround, but the issue must be fix by Apple.