Mac OSX 10.9.5, NVIDIA card
Broken: 2.75 RC2 Hash: c85a58a
Short description of error
I had an object with a long list of modifiers, and scrolled to the bottom of the list. I then selected an object with a much shorter list of modifiers. The scroll bar stayed at the bottom, as if the second object's modifier list was as long as the first, until I scrolled up all the way, at which point i could no longer scroll down again into the empty space.
This gave me the false impression that there were no modifiers on the second object.
Exact steps for others to reproduce the error
1 - open bug_report.blend
2 - select Cube_long
3 - scroll to the bottom of Cube_long's modifier list
4 - select Cube_short
5 - look at modifier list.
5 - scroll up. You'll notice the length of the scroll bar changes as you scroll. You can no longer scroll down.