I found a small bug in the PDF+LaTeX export module. In the generated tex-file that contains the object placement information for latex a few comment character at line ends are missing.
This causes some funny misalignment effects if the final pdf with superimposed text is wrapped into other latex-command. Sometimes LaTeX requires to know where a line ends, otherwise undesired spacing is created.
We have identified the lines with missing comment characters '%' here:
and I would not mind to fix this myself, but I can not find where the PDF+LaTeX module is located in the inkscape branch. If someone could please point me in the right direction, I'd appreciate it.