Select tool acting weirdly!

[sl60]

Yes, it is in plus. I don't get it. On one area of the same layer the rectangle select worked properly but the fuzzy select in the same area did nothing. But in another part of the same layer it selected the entire area (even though it was broken up by tree branches and leaves). I tried the select by color on this same area and it selected the whole thnig, just like the fuzzy select did.