This has never been an issue until just now but consulting the official documentation it appears that there should be a search box which is distinct from the pattern area.
Only... I don't seem to have it. I can see, rotate, deform etc. the pattern and I can resize the search area but there's no box to see the defined search area.
I've got some fairly fiddly tracking to do and to save time, I figured there's no point having huge search areas around each pattern, but the patterns are varied and organic in nature...
Maybe I've missed something but none of the videos I've caught seem to have it either. Did they removed this or is it disabled somewhere?