More issues with masks and frames?

Hi! I’m designing a binder and something curious is happening. On the back I’m including a translucent layer and a photo collage, and the translucent layer changes color in the preview. If I change the layer order it looks fine again. I’ve used the pre-designed frames, and I’ve also tried placing the photos independently, even when I use a mask and the problem persists. Then I tried placing a photo without any mask or frame and indeed that’s the problem. I want to place the photo with rounded corners so I’m using masks and frames, but it seems that’s causing an issue. In case the team wants to take a look, I’m sharing the product link; it includes the whole process, but some layers are hidden.

https://www.zazzle.com/z/azdktl28