I have merged two user profiles. In one user profile I had created a custom filter named "My C++". Now this filter is not shown anymore. But as soon as I want to create a new custom filter with the same content, I receive an error message, that exactly the same filter already exists.
Also creation of a different filter with the name "My C++" is impossible, because a filter with that name exists already. This feels like a clear bug. Or is there a reason for it? Is it possible to fix that?