It seems that since Sunday, the 15A and 15B buses into town no longer cross the Custom House bridge and travel along the North Wall Quay to the Convention Centre, where they used to cross back over the Samuel Beckett bridge, past the Grand Canal Theatre and down Pearse Street to Ringsend.
Now they continue straight along Townsend Street and into Pearse Street on their way to Ringsend.
Dublin Bus are putting the spin that this "saves you up to 10 minutes on your journey time". It only does this of course if you are travelling beyond Pearse Street to Ringsend, completely missing the point that many people want to travel to Custom House, the North Wall Quay, IFSC and Convention Centre.
There is no apology from Dublin Bus that far more people will be inconvenienced by this change than benefit from it, and less than a week's notice was given for the change.
Should you feel strongly enough to do so, you can complain to Dublin Bus using this link