cubicweb-comment #2961579 adding a comment should update the root's commented entity modification_date [in-progress]

This currently done in forge.

priorityminor
typeenhancement
done in<not specified>
load0.000
load left0.000
closed by<not specified>
patch[hooks] Update modification_date of root entity when commented [reviewed]Update modification_date of root entity when commented (closes #2961579) [rejected]