This bug has been reported by the user Alan Shepherd:
"It seems to be difficult to selectively replace strings. If I do a replace, the Next and Prev buttons are greyed out and I have to change the Find field to continue searching. Use case: replacing a variable name that also occurs as a substring in other places"
When clicking on replace it should replace the string and move into the second occurrence of the string. The Next and Prev button should not be disabled when their is another occurrence of the string.
The focus (when using Tab) should only be on text fields such as (Find, Replace) rather than moving to the buttons (Prev, Next, Once, All)