On docker swarm some tasks are not marked completed

Docker
#1

add to forum on introduction
feedback

#2

You can use the Mark as completed button at the top of the screen.

#3

Hello! the bottom is disable. Please check in several chapters, feedback, forum and so on, the complete bottom is disabled and it doesnt mark it automatically either.

#4

Can you show a screenshot please. I’ve not seen it disabled before. Are you logged in?