Copy&Paste seems to insert a bitmap

Version 0.47pre0 on Mac OS X 10.5.7

I wasn't completely right the first time. Here we go again:

When copying and pasting an object (shape, text, whatever) the normal way (ctrl-c, ctrl-v), it seems like a bitmap is inserted instead of a copy of the object. All color/gradient attributes seem to be lost (the inserted thing looks the same, but I cannot change color/gradient attributes). Copied text is not editable anymore and rendered anti-aliased as opposed to the original text.

Additionally, all tranparency information is lost (the whole rectangle surrounding the pasted shape/text is opaque).