Confirmed on 0.47-pre1. A group should be treated as a single object, but instead the objects that inside the group are tweaked. I'm not sure if this is the intended behaviour or not, maybe an option for switching between both modes is needed.
Pablo Trabajos wrote on 2009-08-14:
> I'm not sure if this is the intended behaviour or not, (…)
This is intended behavior according to the release notes:
«The tool will work on any number of selected objects; for example, you can select all (Ctrl+A) and "smear" your entire drawing by Push mode or paint it by Color Paint mode. You can also apply it to groups of objects; it will go into groups and act on individual objects inside groups.»
<http://wiki.inkscape.org/wiki/index.php/Release_notes/0.46#Tweak_tool>
iglooo101 wrote on 2010-08-21:
> tweak_causes_group_to_ungroup.swf
No sure what you mean by this video comment: if you deselect the group every time before switching to the tweak tool, there are no objects to be tweaked (the tool itself cannot select objects):
Confirmed on 0.47-pre1. A group should be treated as a single object, but instead the objects that inside the group are tweaked. I'm not sure if this is the intended behaviour or not, maybe an option for switching between both modes is needed.