`gui.DrawNew(..., false)` straight up doesn't work

Update: gui.DrawNew was deprecated as part of a large refactor in 2.6, clear is now hardcoded to true in GuiApi

Script:

x = 0;
while true do
	if (x == 100) then
		gui.DrawNew("native", false);
		console.writeline("first drawText call");
		gui.drawText(16, 24, "first string");
		gui.DrawFinish();
	elseif (x == 200) then
		gui.DrawNew("native", false);
		console.writeline("second drawText call");
		gui.drawText(16, 40, "second string");
		gui.DrawFinish();
	end
	x = x + 1;
	emu.frameadvance();
end

I expect to see "first string" appear after 100 frames, then after another 100 frames, see "second string" appear beneath it. In actuality, when "second string" appears, "first string" disappears.

I didn't try ApiHawk but as the gui lib is delegated it should be the same.