Completed Immortal King's set dungeon doesn't count

[plushtelin-2704]

Just finished immortal King’s set dungeon mastery, but it won’t appear completed.
https://drive.google.com/file/d/12vmKda0QZIDQz_SP0i-YYMV6HVEHN0IJ/view?usp=sharing
https://drive.google.com/file/d/15noGDipc0dUU59uSG2bBnbZ96r8XASsX/view?usp=sharing

[Meteorblade-2266]

From the pinned Things That Are NOT Bugs thread at the top of the forum…

@Dragonmaster-1816

2. Achievement/Conquest Window Doesn’t Checkmark Boxes (I.E. GR55 with 6 sets)
   The Achievement/Conquest Window is slow to update and at times will not reflect say a GR clear with the required set. It will update sometime but it is still considered complete and if you meet the requirements for the achievement/conquest, it will still finish even if the check boxes are not updated.