I'm not sure when this started, so please correct the (earliest affected) Version as deemed fit.
When searching for a text string not found in the document,
on the first trigger to search, nothing happens;
on the second (even if string is changed), cursor moves to moves to the start of document.
This behavior is troubles the user to manually go back to the original place in the document.
(I've been depending on a workaround by using Undo and Redo, if possible.)
*** This bug has been marked as a duplicate of bug 101873 ***