Comment 25 for bug 258613

> However, looking at the possible choices in those cases (like "every
> 11th day of the month" vs "every second Tuesday of the month"), I guess
> there is no easy solution to apply "event dragged by mouse" changes
> easily to those repetition rules.

Although I agree those situations will be hard to deal with, this bug relates to a simple-to-deal with (from an interpretation of user intent perspective, not necessarily from a coding perspective) change in day and hour of a weekly-recurring event.

> I even would say, the behavior is consistent with the
> design -- albeit not very intuitive for the user.

You suspect that the software was designed to let the user drag an item to a different day, yet not change the day that the event takes place? Why don't other calendaring software operate in such an unintuitive manner? No, I suspect that this is a programming error. Even on the off-chance that this is by design, it is still a bug.