Hello. First time anyone report this bug. You need to give more details about what other plugins you're using and in what order they are in the plugin manager. Also, what are the 'things' you're trying to add to the general list. Also you need to check if bug occurs when you add 'things' to general section (which is always present), OR when you add other sections.
And finally, my itchio account isn't the right platform for support. It would be better if you could post your problem in the RPG Web forum thread of the plugin:
Or pm me on the RPG Web forum.
Or contact me on discord.