Inkscape 0.91 r13725 x64 (MSI)
Windows 7 SP1 x64
Steps to reproduce the problem:
1. Start with a fresh profile. (this isn't really necessary, as I can duplicate it with my normal profile, but as a safety net)
2. Open any file in Inkscape that has a linked/embedded image in it.
3. Once the file is opened in Inkscape, select the image, right click on it, and then go into 'Object Properties'.
4. Hit the 'Set' button.
What happens:
The space that is between the text "ID:" and the text box beside it disappears.
What should happen:
The space that is between the text "ID:" and the text box beside it shouldn't disappear.
Work around:
Seems the space is reset when you attempt to (or do) save the file, because when you go back into that window, the space is back (till you hit the 'Set' button again).
Reproduced with 0.91 r13725 and 0.91+devel r14080 on OS X 10.7.5
(not related to linked/embedded images - happens anyway, independent of object type)