Steps to reproduce:

1. GO to nvaccess.org
2. Scroll to the text below the "What is NVDA" heading
3. Select the line below the heading
4. Start a python console
5. Do the following:

   ti=nav.treeInterceptor.makeTextInfo("selection")
   ti._startOffset
   323
   ti._endOffset
   421
   ti._getPointFromOffset(323).x
   401
   ti._getPointFromOffset(323).y
   673
   ti._getPointFromOffset(421).x
   401
   ti._getPointFromOffset(421).y
   673

As you will notice, the x and y for both offsets are the same, which shouldn't be the case.