Image is significantly lighter on Photoshop beta then when exported.

Image is significantly lighter on Photoshop beta then when exported. When viewing my file on photoshop beta, it looks like as if I placed a 50% white layer over the whole image. This is happening to multiple files. Not every file though. Does not happen with regular photoshop. I believe it’s some kind of view change from a hot key but I am not sure. Please help.

How it looks on photoshop beta

How it exports as a png.