I can confirm this behaviour (but it's still a bitmap copy, only it hasn't the attribute for not preserving the aspect ratio set).
You can fix this (as a workaround) by adding (without the quotes)
"preserveAspectRatio"
into the first text entry field and
"none"
into the text field in the XML editor when the object is selected. Then click on "Set".
I can confirm this behaviour (but it's still a bitmap copy, only it hasn't the attribute for not preserving the aspect ratio set).
You can fix this (as a workaround) by adding (without the quotes)
"preserveAspect Ratio"
into the first text entry field and
"none"
into the text field in the XML editor when the object is selected. Then click on "Set".