Why can’t my Sticky Menu be correctly positioned?

Hello plug-in author, I have been looking for a directory plug-in that can be displayed on the side, until I found your plug-in, which is exactly what I need, but I found a problem during use, that is The content inside the Sticky Menu, when I click with the mouse it won’t position correctly, and I don’t have this problem with the active menu, can you help me to solve this problem? Thanks and best wishes!