Pb with an acitivity not planned

Dear all,

I have planned an activity from january, 2nd to december, 29th, with one ressource (50 hours).
This activity is a long-term one with few daily work (about 1 hr / day).
I planed this activity as "fixed duration".
The ressource has spent 3 hrs since January, 2nd.

BUT ProjeQtor has planed no task, and the real column said that the activity is over (finished).. and so the avancement is 100%.
you could see my pb in the screen capture I post with?
All the best
Christophe