Comment 4 for bug 1999207

Are you using some layout which is not provided by xkb-data?

The one I used is named "French (alt., Latin-9 only)" and is represented by the dconf value fr+oss_latin9. The dconf value fr+latin9 is also available, but the name of that layout is "French (legacy, alt.)".

I'm not sure about the significance of which particular layout is used, though. But I'm wondering in what way your observation results in unexpected behavior for the user. Yes, there are differences under the hood. But how is that important in practice?