This may be a bug or may be related to system settings.
That "2" character that is not displayed properly in the Schedule is a superscripted character. That may have something to do with the problem.
Do you use the INT version of ArchiCAD on a Thai operating system? Or is it English operating system?
You may try to experiment with the Region and Language settings of your operating system. There is a Language setting for non-Unicode program (see attached image). You may try to set that to English and see if that helps. As far as I know ArchiCAD is not fully Unicode which can cause issues with characters. You will need to quit and restart ArchiCAD for changes to take effect.
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