Incomplete scroll bar
 

I am having problems with the left/right scoll bar on one of my worksheets in
a workbook. It only displays a portion of the scoll bar on the screen, i.e.
I can't see both the left and right arrows at the same time on the screen.
Also the sheet tabs will only show when I am on that portion of the
worksheet. The other worksheet seems fine. Any suggestions on how to fix
this problem.