Pixelated thumbnails in gallery viewer


On my Fairphone 4, when I’m using either Instagram or WhatsApp (just these two), the thumbnails in the gallery viewer, for selecting photos to upload/publish, are very pixelated. As mentioned, I just have this issue with two app (as far as I know - I’ve tested Twitter, Facebook, Facebook Messenger and the generic Android ‘Messages’ app for texts/MMS) and I suspect I’ll have to get in touch with the developers of these, but just wanted to first check if anyone else has had this issue, and if they’ve come across any solutions.