If you have an object selected that was created by the Live Path Effect of another object, you can now quickly find the responsible LPE object by clicking on the new button at the bottom of the 'Path Effects' dialog. This is very useful for all Live Path effects that create dependent objects which can be selected independently, like the new
Copies LPE, the
Boolean Operations LPE, the
Rotate Copies LPE and many more (MR #3479).