For our product there is a common type of bug we get reported. It is not really a bug, also it is not a feature - instead it is a missing or incomplete feature.

For example to help users we add a search feature on one screen, but there is no search on some other screen. Now the absence of search on that screen is apparently a bug.

To make things worse to report the bug users try to trick us. They say something like:
"Hey can you help me? How can I find things in the abc screen?"

So I explain how to browse for the item or whatever.

Then they say:
"Ok now how do you do that on the xyz screen?"

Slightly suspiciously I now tell them how you can browse for the item like before or we have this new feature eg. search you can use if that is quicker.

Now they say:
"Don't you think it would be better to have that search on the first screen?"

OK now I realize this is just a trick and the person doesn't actually need help using the software. So I tell him how we only added the feature on one screen and if he thinks there is value adding it on other screens he can put enhancement request in and if wants he can talk to my boss about making it a priority.

Then they go on asking other rhetorical questions like:
"why was it designed like this?"
"Are you guys deliberately trying to make life harder for people by making them learn different ways to do things?"

I now want to delete the new search feature but luckily it is close to lunch time so I have a good excuse to escape the conversation.