1) click on Group Button. Datas are grouped
2) type '111' in Content textfilter for My column
3) see, there are no results
4) click on 'Ungroup'
5) see Script Error.
I can have the same without a bug. I remove content text filter, and replace it with a view text in the toolbar.
3) i can see no bug. but i have to ungroup first.
I try to use the beforeonfilter on datatable and ungroup first, but it is bugging too
Hope it helps, it's an annoying bug.