Some text (UnityEngine.UI.Text) using Dynamic Font on iOS is broken very rarely, but I am stuck in the investigation.
Although it is a little old, I looked at the Destroy timing of the text as shown here, but the Destroy of the text was not called at the timing when the character collapse occurred.
https://helpdesk.unity3d.co.jp/hc/ja/articles/115003102887-ダイナミックフォント-uGUIでの文字化け
When I intentionally enlarged the font texture and made it larger than 4096, the same symptom occurred, but when the character collapse occurred, the following error was not displayed.
Failed to update dynamic font (font name) texture; all the needed characters do not fit onto a single texture (max size 4096). Try using less text or a smaller font size.
If you have any other information that can be used as a clue for the investigation, would you please let me know?
environment:
Unity 2019.4.1f1
Xcode 12.1
iPhone 11Pro (iOS 13.0.0)