steps to reproduce

run the attached example using Chrome
resize the browser window multiple times

actual result

the horizontal positiong of the right <div> changing with each resize

expected result

the right-aligned <div> should remain on the right, while the left label should consume the remaining space (defined by hflex="1")

Workaround

A) use hflex="min" on the <div>

	<div hflex="min">

B) use <hlayout> instead of <hbox> (which results in a simpler DOM)

<hlayout hflex="1" spacing="0">
	<label hflex="1" value="Left aligned label"/>
	<div>
		right aligned stuff 
	</div>
</hlayout>