My Sideberry sidebar performs sluggishly

[DL909]

My Sideberry sidebar performs sluggishly, meaning there's a noticeable delay both when I hover my mouse over it to expand and when I move the cursor away for it to collapse. I wish it could be more responsive.
I just switched from Firefox to Floorp (specifically, within the hour before sending this message). Specifically, I downloaded the latest stable version of Floorp from its official website and installed it on my macOS 15.5 computer. After launching Floorp, I logged into my Firefox account to sync settings, installed several extensions from the Firefox add-on site, added others by dragging and dropping from my Firefox folder, and installed Sideberry from GitHub—following the readme instructions to disable native tabs. That’s when I noticed the sluggish behavior in my Sideberry sidebar. I've deactivated all extensions except Sideberry and restarted Floorp, but the issue persists.
I am not a native English speaker; in fact, I primarily use Chinese. This content was originally written by me in Chinese and then machine-translated. I apologize in advance for any potential inaccuracies. If you would be willing to communicate with me in Chinese (provided it aligns with community guidelines and isn't inconvenient for you), I would be deeply grateful.

[DL909]

Meanwhile, I noticed that in Floorp, when the Sideberry sidebar pops out(I mean, it won't have such behavior in firefox when I use firefox), it squeezes the page and causes it to resize. Is there a way to prevent this behavior?