What you see marked as trash depends on your own junk filter settings & how you've rated files (as junk/not junk) previously.
If you're seeing files marked as junk, but you think the files are ok, mark them as 'not junk'. The filter will learn over time.
If too much is being labelled junk, you might need to relax your junk filter settings a bit

This thread's old & pretty long, but has some good info.
Junk Filter