Intermittent incorrect range for Bible Search

I have noticed a strange problem with Bible Search ranges.

If I have a Bible translation open and want to see where a word occurs elsewhere in that Bible, I right-click on that word, choose "Selection" and "Search this resource".

Normally this works as expected - in that it uses the entire Bible as the search range.

However, sometimes, it uses the range of the last search I did even if that search window is no longer open.

If I execute the same search again - with no other changes - then the full range of the Bible is used.

I haven't been able to pin down the exact sequence of steps to reproduce this but have seen it now on a number of occasions.

Graham