Sort users list by users groups: error

[pulsarinformatique]

Hi With J3.8.6 + SEBLOD 3.15.0

We can't sort a seblod list of users on the groups they belong

If I put the user groups field in the ORDER tab I get an error "Unknown column 't3.groups' in 'order clause'" even if I also put the user groups field in the search tab.

what is strange is the fact that in the SEARCH tab the user_groups field is correctly understood the and jointure is done. if you activate the debug you can clearly see that the Query makes a JOIN with #__user_usergroup_map

however in the ORDER tab the same field is not recognized.

Thanks

cyril