P: Free Transform does not support transparency while menu is active

[N A V I S H]

Hello. 

I've encountered on multiple occasions, in Photoshop BETA, that while inserting another picture and while the transform is active, you cannot set any transparency. Although you set it at a desired amount, the screen flashes but the transparency isn't there.

[Erin26]

Thank you @N A V I S H , 

I am able to reproduce the issue and will log a bug.