That is, you should be able to select some blocks in Logseq, copy, and paste into GDocs or some other app and have formatting look at least somewhat correct (I’m using the desktop app).
The export page feature gives you all sorts of options, none of which are the right thing.
The Rome desktop app does this, so it’s possible.
This might be better classified as a feature request; but for something this basic, it’s really a bug.