After entering 'ๅ', some key can't be committed properly.

[Inhong]

Hello,

I use the libthai and scim-thai to enter Thai. And I found some issues while testing Thai input.
'ๅ' can't be entered consecutively, and if 'ๅ' is entered, there is an issue that some text including 'ๅ' can't be entered.

When the text is entered normally, 1 is returned when calling th_validate() API from scim-thai, but 0 is returned when issues occur.
And the same issue does not occur when entering other text, but only when entering 'ๅ'.
It is difficult to check whether this is working normally or not. I'd appreciate it if you could answer my question.

Regards
Inhong Han