@saphira_linksoft_com_tw
We have closed this issue (WORDSNET-22182) as ‘Not a Bug’. Please use the following code example to get the desired output. You need to enable open type features in your case. Please read following article.
https://docs.aspose.com/words/net/enable-opentype-features/
Document document = new Document(MyDir + "KH_Reviewed.docx");
document.LayoutOptions.TextShaperFactory = HarfBuzzTextShaperFactory.Instance;
document.Save(MyDir + "21.6.pdf");
The client has test the way you provide, but the problem still same.
screenshot-1.jpg (152.3 KB)
@saphira_linksoft_com_tw
After further investigation, we noticed that your issue is related to missing feature WORDSNET-15081 (Thai text is wrapped incorrectly). The WORDSNET-22183 has been postponed due to this missing feature.
After the fix of WORDSNET-15081, we will look into your issue. We will be sure to inform you via this forum thread as soon as this feature is available. We apologize for your inconvenience.