Negative Scale Prevents Masking in new UI

Im pretty sure this is a bug but ill post it here just incase its intended before I report it as a bug.

If you use negative scale for flipping, then try to mask a negatively scaled image, it isnt masked.

So for example, if you setup the hierarchy like:



Two images below a mask, the first image is masked fine:



However you can see that if you set the scale on the masked image to be a negative value it no longer respects the masking:



Negative scaling is important as its a common effect for "flipping" sprites.

Here is the demo project: https://www.dropbox.com/s/7hph7gzaf0fj61e/NegativeScaleMaskingProblem.zip?dl=0

Cheers,
Mike

 

Great, I thought that may have been the case, I wont file a bug report for this one, thanks Phil.

 

Well, it still happen though.

 

Yep, 7 years bug