I think the only issue I have come across, very occasionally, is that information in an article is changed or updated or removed. It's possible to see the edit

I think the only issue I have come across, very occasionally, is that information in an article is changed or updated or removed. It's possible to see the edit history, but it's not optimal. You could save an offline copy for certain articles but then they won't get updated. Edits due to political reasons in a technical article are annoying. The other issue I have come across is that sometimes the articles from a specific category aren't linked well or aren't equally in depth. Some might be thoroughly researched but another might have a single paragraph. I haven't come across issues with the information itself, for information unrelated to celebrities and politics.