Repro Steps:

1) Create a Page
2) Using the Path Tool (P), draw any enclosed Shape.
3) From the Animation Panel (Ctrl+5), navigate to the Storyboard Tab, and press the (+) to create a Storyboard. This will open the Storyboard in 'record' mode.
4) Using the selection Tool (V) Select the Path drawn in Step 2). This will make its Properties Panel appear.
5) From the Path's Properties, adjust the 'Trim Start' value to anything other than the current value. This will place a Keyframe on the Storyboard timeline.
6) Equip the Path Selection Tool (A), and select any Path Point on the Path. This will make the Path Point properties appear in the Properties Panel.

7) Select the Path's layer from the Storboard timeline, this will make the Path's properties appear once again in the Properties Panel. However note, that on the Stage, the Path Point selected in Step 6) will remain as 'selected' (do not deselect it).
8) From the Path's Properties, adjust the 'Trim Start' value once again using the Slider.

Observe how once the new value is input, the panel changes to that of the Path Point, and not the Path.

Expected Results: Changing a Path Property when a Path is selected does not induce a change of the Property Panel to that of a selected Path Point.