Find function crashes (3.9.10b2)

[daedalus2097]

More often than not (~75% of the time), the Find function crashes with a $8000002B guru. Fresh install of the 3.9.10b2 release, loading a single source file and running a search. It doesn't seem to make a difference whether the search term is present in the source or not, or whether the search is forwards or backwards.