BUG: Button Not Getting Clicked When scrollview scale is zero

Hi @slackmoehrle & @Big_Bear

Kindly find the bug demo in attachment.

Case:
The button is not clickable when the scrollview’s scale is set to zero.
And works fine when scrollview’s scale is One. As it can be seen by button’s transition color when hovering over it.

I have checked , this case is present atleast since v2.0 till v2.1ClickTest9.zip (479.7 KB)

I have tested with ScaleY only.

Kindly toggle scaleY of scrollview to 0 and 1 and observe the difference in button’s interactivity.

It happens when scrollview is below the button in node heirarchy.

Rest you can check and let me know the problem.

thx, I had feedback this bug and we will fix it later
you can track this pr and get some helps:https://github.com/cocos-creator/engine/pull/4456