Howe felt the already-booked midfielder Andre Gomes could have been sent off for a second yellow card after two separate fouls in quick succession and also believed his side should have had at least one "stonewall" penalty.
"I thought the first one could have been a yellow card, the second one could've been a yellow card and when you add them up together he's very lucky to stay on the pitch," Howe said regards Gomes' two challenges.
"He could've given a penalty away at the end but I think he's lucky to be on the pitch at that stage."
Specifically on the spot-kick decisions - one in the first half and the other late in the second on Jefferson Lerma - the Cherries boss added: "The first one I thought at the time was a penalty on David Brooks but I haven't seen it again.
"Then, I am told, but I haven't seen it, we should have had a 'stonewaller' at the end of the game. Again that is how these things are going for us.
"It's a difficult one to take again for us. Very similar to our recent run."