Comment 2 for bug 1958492

Thanks for your report. First a question:

How do you set "Japanese 109-key"? I don't see such a keyboard model option.

But leaving that aside, I suspect that you also want to install the mozc-utils-gui package. Because only switching to Mozc isn't sufficient. You also need to select some other "Input Mode" but "Direct input", for instance Hiragana, and for that I think that the just mentioned package provides the necessary tools.

Mozc works together with many layouts which provide the latin a-z letters, including us+intl, so I don't think Mozc was confused by that layout. ;)