Currently, when you right-click on a folder or feed, it not only opens the right-click menu, it also switches to that feed. The problem is that this requires loading up the feed, which can result in the UI freezing until the feed is loaded (which on my system can be many seconds), preventing you from actually using the right-click menu. Since you can also switch to a feed using the left-click, this is redundant. Further, most, if not all, the tasks in the right-click menu do not benefit from switching to the feed (at least in the foreground), so blocking the UI while the feed is being read only serves to interfere with what you are trying to do.
Thank you for the bug report. As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists. If this bug is no longer persisting or relevant please change the status to resolved.