It wasn't so much of a problem when you were opening the doors by leaning out the window and turning the handle. It was kind of hard not to notice that you aren't at a platform. Now that it is just a matter of pressing a button and you could easily step out without looking so it is actually quite dangerous to not stop at a platform. It is much better as it is now. There used to be a death every couple of years from somebody falling out of a manually operated door.
Could you at least say what line the train was on if you'd rather not say which station. I find it hard to believe that they scheduled a train that wouldn't fit a platform and it would be much more likely that it was driver oversight and stopping a bit too early. I've seen a 22K stop with the last door on the ramp part of the platform at Edgeworthstown once or twice and there isn't a hell of a lot of leeway on some of the Sligo line platforms so I would think it can be a bit tricky to judge.
Why can't they paint stop-lines for various lengths of 22K on fences or walls? It wouldn't cost anything much to speak of and in addition to improving safety it would result in an improved passenger experience by helping drivers judge where to stop shorter trains to avoid long walks which can be very difficult for elderly or disabled passengers.