Cards back from PSA with weird white squares all over them

Hey guys, first time posting here I hope I’m in the right place. I got back a regular submission of 10 cards today, 7 of which had these weird white squares all over then, Luckily, my 2 10s and a 9 are okay, but I’ve submitted a request with PSA to see what’s up. Have any of you seen this before? Here’s a link to the pictures

Welcome here @roilty, the correct place to post your question is here: www.elitefourum.com/t/the-giant-professional-grading-thread/30930/1