The Treatment quest is not marked as completed when the treatment ends

[Der Maskierte]

It does not seem like it is intentional, and it can be a bit bothersome or distracting as incomplete quests appear in the tooltip of the Fly destinations

Maybe there could be a final step reporting to an NPC about it so a fix works with older saves, like talking with Ellie or Bit T. about it

 

[Jacques00]

Hopefully fixed for the next release. If the label in the stat appears as "Treated", then the Treatment should be considered as completed.