Sidebar dropdown menu icons are missing in Firefox 116

[erwin4270]

Describe the bug

Just updated to Firefox 116 and the sidebar dropdown menu icons are missing.

Expected behavior

Sidebar dropdown menu icons are present

Screenshots

Firefox 115

Firefox 116

OS

Windows 11, Windows 10

OS - Others

No response

Firefox Version

v116.0 (stable)

Distribution

• [X] Original Lepton
• [ ] Lepton's photon style
• [ ] Lepton's proton style

Theme

• [ ] Light
• [ ] Dark
• [ ] Alpenglow (System: Light)
• [ ] Alpenglow (System: Dark)
• [ ] System Default
• [ ] Others: (e.g. Photon Colors, Google Chrome Dark, Fairytale Of Nature)

Theme - More Info

No response

user.js setup

user.js setup

```javascript // Default settings used ```

Additional context

No response

[rockenren]

Same in Lepton's photon style.

[Aleksandra0056]

I can reproduce it too. Maybe Mozilla did some changes to sidebar's CSS. (And it is so annoying)

[black7375]

The structure has been changed from the panel menu to a regular menu. Now, fixed!!

[erwin4270]

The latest commit fixed the missing icons, but the padding is too close than the extension that can utilize the use of sidebars, such as Tree Style Tab:

[black7375]

What's your OS and Firefox? Windows10, linux's v118 is works well

[rockenren]

Windows 10, Firefox 116.0.1:

[erwin4270]

What's your OS and Firefox? Windows10, linux's v118 is works well !

Same as @rockenren Firefox 116.0.1 (latest stable), also happens on Windows 11

[black7375]

Ok, thank you for feedback. I've updated code.