History panel: "due date" order not functioning

I have done some meetings and calls for an account. After closing them I find all in the history panel but if I try to order them by due date nothing happens, while if I click on “date modified” or “date created” everything is OK.
The up (or down) icon becomes white (so it is active) but nothing happens for “due date”.

Hhm I remember seeing an Issue on Github with this bug about a month or two ago…

Yeah, you’re right:
https://github.com/salesagility/SuiteCRM/issues/6040
But it has been open 8 months ago, and it’s still open.