No Quest Marker for Certain Witcher Contracts

Been looking around internet for answer and the most conclusive thing I have heard is that it is the games way of making you explore, sounds dumb. I literally found Bolko. Found out what he looked like from researching this bs and it said 'Old Man' as the character. Talking to this character did nothing. The only thing that might be attributing to this is the fact that I remember starting this quest and talking to Bolko and then instead of talking to the witnesses around midcopse, I started another quest because I wasnt a high enough a level at the time thinking 'O it'll just start me where I left off when I am the appropriate level'. Wrong. Def a bug. Can imagine this will happen on other levels. Sorta makes me want to sell the game.