edge pdf adding text with Vietnamese letter disappear

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  • duydafr_0-1652048360228.png
    Hello
    I tried adding Vietnamese to the text box but the "ườ" and "ấ" went missing after I clicked outside of the text box ( left box ). When I clicked the text box again, the words went back to normal ( right box ). I'm using stable channel Version 101.0.1210.39 (Official build) (64-bit). Pleasee help me. 
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