hildenburg

Hello, everyone. I updated Affinity Photo to its 1.9 version yesterday. I need to work on some mockups, but when I open the PSD I'm going to use, I see these weird shapes – but only on the layer with the embedded document. I'm not sure if this is a software issue, or if it's a problem with my graphics card (this had never happened before), but I thought maybe I could get some guidance/assistance here. Attached you'll find an screenshot of the issue. Thanks for your help.