SVG Icons only in Classic UI and Basic UI?

I have set up Classic UI and Basic UI in OH2 to use SVG icons, and that works (they both use the same set).

However, Habmin2 and the iOS app (v1.7.4) do not display these icons (or any others). Am I right in assuming that the iOS app still uses PNG icons and that Habmin2 does not use icons at all? And that Paper UI only uses its own?


Regarding iOS: Yes, only png.