Hi, mguttman
Sorry, if I answer instead of the OP, as I’m using Thai language too. OK, Thai language is written left-to-right just like the English language.

However, there is some character that need to be written “above” and “under” another character, which does Emeditor to make the “unintentional whitespace” between those characters just like the picture that OP has shown above.

Hi, Yukata

Thanks for the advice, Yukata.
BTW, I have put those 2 DWORDs values as you suggested but still doesn’t work. Is there any other solutions please?