Cannot Group by on Many2many field

[lesdekock]

In search view "view_ps_us_search" the group by for sprint_ids fails as it is now a M2M field.

[mlaitinen]

It seems sprint_ids was previously a Many2one field which supports grouping: 6df1c44. Many2many fields don't support it.

[mlaitinen]

I cannot think of any other solution for this than removing the "group by" from the search view.