Just that really. I'm doing an undergrad online creative writing course and also belong to a local writers group.
In both cases I find the men in the group (all bar one, who is lovely) to be really obnoxious in the way they talk/write to the other writers (mostly female) and when they give feedback.
Although we've all been given guidelines about how to give constructive feedback, it's as if it doesn't apply to them. They act as if they are the teacher/leader of the group, when in fact, we're all equals. At least one of them in my online group ends his feedback with patronising comments such as "this is not a bad effort, keep trying, I'm sure you'll get there..." 
Am I just unlucky, or is this widespread?