and there was nothing serious like quests breaking.
Quest breaking is there though. Actually, quite a shitload of quests can be broken.
The thing is, one isn´t likely to encounter much of this during average playthrough, since breaking usually occurs when approaching things in a maybe more nonstandard manner, at least I guess so.
If you´re more of an experimenting type and highly prone to freeroaming, you´ll probably end up with few quests in suboptimal state.
Combination of open world and multiple quest solutions results in a big amount of variables and not all are always taken into account properly.
For example, in my quite thorough playthrough, SPOILERS, I´ve noticed a major bug in Bortherhood line (it was easily to spot it doesn´t work as indended, so I´ve avoided it), couldn´t finish Veronica´s quest because I´ve acquired one item too early, I could play for both Yes Man and NCR for too long and it could result in NCR line being broken, the NCR/Fiends skirmish would most likely mess up one of Khan´s quest would I´ve taken different approach in it and logic in otherwise awesome White Gloves quest wasn´t airtight either if I tried to use simultaneously more than one path to solve it.
Companions sometimes loosing their weapons and ED-E making NCR go hostile became also quite noticeable after a while.
All these things are so obvious, it´s clear the game really wasn´t tested all that thoroughly.
Given the overall amount and quality of game´s content and rather expansive experience the world provides, it didn´t bother me much and overall I consider New Vegas a great game even in the state I´ve played it, but it does have a lot of issues which should be addressed.
Hopefully the patch which will tighten the quest logic is already in development.
