V10.4.3 One day of gap in planning when begin Milestone status is done

Hello,
I'm a new user of projeQtor. Thank's you for your very good work.

I suppose it is the same behavior in V11 but i haven't tested.
I have a fixed Milestone that represent begin of Project with validated date of 29/09/2023 (for example). Also, i have a first activity with dependencie with that Milestone.
When Status of that Milestone is not 'done' the date planified of that activity is the same as Milestone (29/09/2023).
When status of that Milestone is 'done' the date planified of that activity (and all dependent activities) change by one day (for example : 30/09/2023).

Why dates of activities is changing when Milestone status is changed ? is it a normal behavior or a bug ?

Thanks you for your answer.

Ho, thanks you babynus ! i'm very satisfied with this answer.
I feared that my remark was incomplete or imprecise or would go unnoticed but it's not the case.

So i hope that it is in good hand....

Also, if i can make another remark, i have notice that the calcul of load distribution in planning is imprecise when a ressource is planified on 2 consecutives activities with partial loads and not full days. (for example : Ressource A work 2.5j on activity1 and next A work 1.5j on activity2). In this situation ressource A is plannified in total of 5j while his load is 4j (2.5+1.5).

it is not a critical issue for me but i have notice this behavior and can you noticed that also ?

Thanks you very much for your work, for projeQtor and for taking the time to respond to everyone.

Ok, i see...
I had simply settled Assigned fields to check how ProjeQtor works.
if I don't make a mistake, i think Assigned values is assimiled as work instead duration so i dont undersatnd why planning is calculed like that but perhaps it's up to me to more undersatnd this behavior and deal with it. But thinking about it more, it's probably a good thing.
I didn't do any more testing, but i keep in mind that all works of several ressources on one activitiy is surrounded by full day to avoid partial day.

I hope I don't say too much mistakes.

In all cases, i have conquered by projeQtor, it is a very good saftware. Thanks for All.

Thanks you very much for patch v11.0.1. Changing Milestone statut seems to work very good !!!