How can I prevent Khmer text from changing in Thai on iOS 18.5?

Hi apple support team,

I encountered an issue when taking a screenshot of Khmer text in iOS 18.5. After pasting the screenshot, the text appeared in Thai instead of the original Khmer. Could you please assist me in resolving this problem?

[Re-Titled by Moderator]

Original Title: I have an issue when taking a screenshot of Khmer text in iOS 18.5. After pasting the screenshot, the text appeared in Thai.