and specifically in Vojvodina, there have been conflicts pushed by nationalists recently.

Honestly, there were tensions in Vojvodina (probably "always" but mostly during Milosevic) between Hungarians and Serbs, because of the history and because Hungarians were loud about how they would like separation. But I really can't remember any serious conflict with Romanians. I am not there and I can't guaranty that now may be some tensions but I haven't heard or read about them anywhere...so I am skeptical about this sudden "news".
On the other hand Romanian situation in Serbia has NOTHING to do with Romania not having Schengen...I do not see connection at all so it's pretty much looks to me like "you stir things in Serbia so we can show them for not being obedient about Kosovo and we'll give you Schengen"...or actually not...but well we can promise to do it anyway...


Science without religion is lame, religion without science is blind...Albert Einstein