And it's that some people have an issue with Gabriel not knowing about Trevor's birth until Trevor's death.
The reason I don't understand it is that the LoS trilogy takes place during before the Crusades. It's still an extremely technologically lacking era, so traveling is a VERY VERY lengthy process (and this is STILL an understatement). And we clearly see at the beginning of MoF, Gabriel leaves on a mission, and it's revealed Marie is pregnant, yet clearly she didn't let Gabriel know.
Soon, we see that Marie has borne a child, that child being Trevor. And Gabriel isn't present. So we can obviously see that Gabriel hasn't yet returned from his mission within the 9 months of pregnancy, so he wouldn't have known about this. This length of time he's gone is normal for the time period it takes place in, on top of the fact that we don't even know how far Gabriel's journey took him (what with LoS taking place in a fictional landscape).
So I just don't really understand why people have complaints over this, or why people have stated it doesn't make sense. To me, it makes perfect sense, and I just kinda wanna know where people are coming from on this. Lords of Shadow has several problems with its plot ever since the first game of the trilogy, but this is one particular point I think made perfect sense.