Transparency not displaying correctly image appears solid

Hi, 

I am having a issue with Adobe Acrobat Reader all of a sudden for some reason it is suddenly not displaying transparencies correctly it has been working fine for months, when i open a file in my Apple Macs Preview app it displays fine so it doesnt seem to be the way i am creating the file (Using Scribus) but rather with Reader, I am running the latest version 2021.001.20145 on Big Sur version 11.2.2

I have attached a sample PDF and also a JPG of what it should display like

Any help would be appreciated