I don't think this is a problem specific to Corbyn but a general shift in the way politics works in the western world now.
Politics has become so personality based and people have become far more fixed in their views. Supporting a political party seems to be more like supporting a team where you should stay loyal as opposed to different groups offering alternative visions and you choosing the one which most suits you at the time.
One of the strengths of Corbyn as a leader for me is that, although his views are often to the left of mine, he doesn't put his personal views above those of the party. He has reiterated again and again that policies should be generated by the party and not the leader's whim. Hence the difference between his position on Trident and that of the Labour Party. However, people tend to hear his personal views (which he is honest and open about) and assume that this will be the position of the party.
I don't agree on his personal position on the EU which is probably the most important political issue for me personally at the moment but I would potentially still vote for him as I think his personal anti-EU feelings would be tempered by the view of the party as a whole.
There is also the well publicised issue where people are getting more news from the internet instead of reading newspapers. Search engines supply you with more and more information which is similar to what you have already read, making our views more and more entrenched and it more and more difficult to see another viewpoint.
I did some research on Britain First and white supremacy a few months ago following incidents in the USA and suddenly my news feed has lurched massively to the right as Google analyses what it thinks I am interested in.
Conversations about politics are no longer people discussing their view of the same information, but people formulating a view and then finding a wealth of "evidence" to back it up.
I used to enjoy discussing politics and am genuinely interested in how others view the way in which people plan to take the country forward, but it has become so much that one side is good and the other is evil, that it can often be a pretty painful experience.
It would be interesting for me to take 2 people from opposite sides of any political issue - Brexit, Corbyn etc. and just see how much common information they had been exposed to. I doubt it would be very much :-(