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It's really great to hear that Japanese works for you now! Thanks to the wonders of Core Text :)
Oh, damn - I forgot the replace text field - I put it on my todo list :)
I'm glad to hear that most people like the update so far :)
Weird, it's actually invoking the same code. I'll see if I can reproduce it.
This is included in Textastic 3.0 :)

This should now work correctly in the just-released version 3.0.

This should now work in the just-released version 3.0.
Textastic 3.0 is now available on the App Store.