Yeah I didn't like using the app for discussions since the notifications would never show up, but then they fixed that a few weeks ago so I've started using that and am now running into the problems you describe. Perhaps I'll switch to Safari.
PT 65+ is where I noticed a switch of sorts... The writing is clearer but there are way more trick answer choices... Like a ridiculous amount of trick answer choices... Once you adjust it will be fine
If that's going to bother you then you might want to switch to a different test center. This site has reviews of test centers: http://www.simugator.com/lsat-test-site-rater.php