[chordwood]

Not quite sure what you are seeing but on my android, when I select the stamp tool, it displays the stamps and I can select the one I want.
Closing the stamps dialog, I can then paste the stamp by tapping at the required spot(s).
I can also move the stamp dialog to a new position by dragging it's title bar with my finger

Does that help?

Geoff
PS: I don't use stamps!

I see all you describe except that the selection tool (the 'fat' arrow head) is shown selected on the main  tool bar and a bar of editing tools pops up at the insertion point (say, for a sharp or fingering number).