According to my calculations (using google) the probability of failing 15 times in a row with 60% chance of failing is:
0.6^15 = 0.000470184985 = 0.04% Not very likely to happen but I cant rule it out. We get reports about streaks like this once in a while, maybe 1 every 3 months, so it cant happen very often unless its not reported, so I'm disinclined to think its a bug. There should be more choices in the quests, based on other skills or some sort of item/money cost. Having 1 choice you just repeat till you succeed is no fun if you ask me.
Not very likely to happen but I cant rule it out.
We get reports about streaks like this once in a while, maybe 1 every 3 months, so it cant happen very often unless its not reported, so I'm disinclined to think its a bug.
There should be more choices in the quests, based on other skills or some sort of item/money cost. Having 1 choice you just repeat till you succeed is no fun if you ask me.