Sidebar on Zabbix web UI isn't slide out.

[valch85]

• Facebook Container Version: 2.3.9
• Operating System + Version: MacOS Ventura 13.4 (22F66)
• Firefox Version: Developer 115.0b9 (64-bit)
• Other installed Add-ons + Version + Enabled/Disabled-Status:
  1Password – Password Manager extension 2.11.0 true {d634138d-c276-4fc8-924b-40a0ea21d284}
  Add-ons Search Detection extension 2.0.0 true [email protected]
  Amazon.co.uk extension 1.12 true [email protected]
  Bing extension 1.5 true [email protected]
  Country Flag + extension 0.2.3 true jid1-s7swGsO2vJBPMv@jetpack
  Dark Reader extension 4.9.64 true [email protected]
  Disable JavaScript extension 2.3.1 true {41f9e51d-35e4-4b29-af66-422ff81c8b41}
  DuckDuckGo extension 1.4 true [email protected]
  Duplicate Tab Shortcut extension 1.5.3 true [email protected]
  eBay extension 1.4 true [email protected]
  Facebook Container extension 2.3.9 true @contain-facebook
  Firefox Translations extension 1.3.2buildid20230220.141944 true [email protected]
  Folx extension 5.25 true [email protected]
  Google extension 1.4 true [email protected]
  Grammarly: Grammar Checker and Writing App extension 8.906.0 true 87677a2c52b84ad3a151a4a72f5bd3c4@jetpack
  I don't care about cookies extension 3.4.7 true jid1-KKzOGWgsW3Ao4Q@jetpack
  KellyC Show YouTube Dislikes extension 1.1.5.8 true {ae424048-7af4-4e8f-acfa-f016f8e9f4b4}
  LastPass: Free Password Manager extension 4.116.0.2 true [email protected]
  Load Progress Bar extension 0.22 true [email protected]
  Simple Tab Groups extension 5.2 true simple-tab-groups@drive4ik
  Tabliss extension 2.6.0 true [email protected]
  TWP - Translate Web Pages extension 9.8.1.0 true {036a55b4-5e72-4d05-a06c-cba2dfcc134a}
  uBlock Origin extension 1.50.0 true [email protected]
  WhatRuns extension 1.7.7 true {66d854c2-fd1b-4857-bd0a-7d220e4834da}
  Wikipedia (en) extension 1.3 true [email protected]
  Center Pages extension 1.2.1 false {2371e3f5-9fde-4ef2-83dc-f78557fe34f4}
  Custom UserAgent String extension 0.2.1 false {861a3982-bb3b-49c6-bc17-4f50de104da1}
  Firefox Relay extension 2.7.1 false [email protected]
  FoxyProxy Standard extension 7.5.1 false [email protected]

Actual behavior

I can't open the sidebar on Zabbix web UI when the Facebook Container extension is enabled.
When the Facebook Container extension is disabled, all works fine - the sidebar shows.

Expected behavior

Show the sidebar on a Zabbix webUI portal when the Facebook Container extension is enabled.

Steps to reproduce

1. Firefox + Facebook Container extension on enabled state
2. Log in to any Zabbix web UI portal
3. Click on the sidebar icon (left upper corner )
4. in the developer's tools console, I can see that I click on the button but the sidebar doesn't slide out.
   https://github.com/mozilla/contain-facebook/assets/1758849/a26221de-73d3-4e8a-ad11-964defdb85bd

Notes

I have added a small video to show the issue