Group by - Error on field's name on list in Static group by --> Group name --> Field

Hi,
Today I realized that in all groups created under “Static Groups by”, the list of selected fields, inside the group’s name, is given the same name for each field, exactly the name of the last field of the list. This has happened with the last update (8.1.031 or 8.1.032) and i see the same thing for all the projects.
​It is everyone’s problem or is happening only to me?