Nope sorry it's not Adobe it's ChromePDF

Adobe pdf reader

This just started happening recently but whenever I open a pdf withing Opera and then switch to another tab and come back to the pdf tab it freezes. It's only that tab that freezes too not all of Opera. I can't scroll I can't right click or highlight anything only thing I can do is close that tab. Has anyone else had this issue and if so were they able to figure out what was wrong and fix it?