Clicking sprites in sprite pane causes scroll in the block pane

[jwzimmer-zz]

Expected Behavior

Clicking sprites in sprite pane should not cause scroll in the block pane.

Actual Behavior

Clicking sprites in sprite pane causes scroll in the block pane.

Steps to Reproduce

• Click back and forth between two sprites in the sprite pane
• Watch the block pane

Operating System and Browser

Mac OS X El Capitan 10.11.6, Chrome Version 56.0.2924.87 (64-bit)

[jwzimmer-zz]

Note: using the X in the upper right of the sprite to delete it also causes the scroll (you are still clicking the sprite).

[jwzimmer-zz]

Dragging a sprite across the stage causes the block pane to scroll slightly as well.

[bigeyex]

solved with this pull request