Not OP and don't have an example to hand, but something I noticed is that with subjects where I understand them well I do tend to notice a bit of a bias, but equally edits are usually accepted too.
The problem in my mind is that on subjects where I'm not as well educated I may well not notice the bias because I don't know what may or may not be disputed for a given subject matter.
Obviously everything on Wikipedia should be sourced but it's entirely possible to be selective of which sources you use.
Welcome to the entire gamut of human endeavour. We don’t live long enough or have brains enough to know everything at once so we delegate information gathering to others.
The problem in my mind is that on subjects where I'm not as well educated I may well not notice the bias because I don't know what may or may not be disputed for a given subject matter.
Obviously everything on Wikipedia should be sourced but it's entirely possible to be selective of which sources you use.