Hi, thanks for trying my plugin! 🙂
This is a bug that I have been working on for a while but haven’t been able to find a proper solution for, unfortunately.
In Legacy mode it does indeed work, but because that relies heavily on Javascript, functionality of the sticky element causes problems sometimes.
The only thing that confuses me is that you say this doesn’t happen when you’re logged in, that’s interesting.
Regardless, it looks like you found another solution for your sticky plugin, so perhaps you don’t need any support for this anymore. Please let me know if you still do!