some trouble on spotify sidebar in microsoft edge

[spx490]

Prerequisites

• I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality in the uAssets issue tracker.
• This is NOT a YouTube, Facebook or Twitch report. These sites MUST be reported by clicking their respective links.
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue.
• The issue is not present after disabling uBO in the browser.
• I checked the documentation to understand that the issue I am reporting is not normal behavior.

I tried to reproduce the issue when...

• uBO is the only extension.
• using a new, unmodified browser profile.

Description

First off, thank you so much for your extension. However, I'm experiencing some issues when using it with Spotify in the sidebar of Microsoft Edge. When I use the extension on the main website and press the forward song button for a while, the ads that show up are skipped quickly and without sound, which is great.

Unfortunately, when I use the sidebar version (open.spotify.com), the ads play normally as if I weren't using the ad blocker at all. Is there any way you could address this issue? Thank you

A specific URL where the issue occurs.

https://open.spotify.com/ (on side bar will show open.spotify.com)

Steps to Reproduce

1. install uBlock Origin (in my browser, I have Grammarly, Return YouTube Dislike button, Video DownloadHelper, and YouTube Mini Player Button Restorer extension)
2. set a side bar button to on and always show a side bar
3. add Spotify to side bar (pin on side bar or not, still the same issue)
4. play some playlist and press (I press for 60 times or skip around 16 songs on Spotify)
5. 5.ads will have 2 or 3 likes you don't have premium or use adblock

Expected behavior

run normal like use adblock on spotify website

Actual behavior

Play some playlist and press (I press for 60 times or skip around 16 songs on Spotify), ads will have 2 or 3, like you don't have premium or use adblock, but on spotify website still running fine.

Configuration

Details

uBlock Origin: 1.68.0
Chromium: 143
filterset (summary):
 network: 183421
 cosmetic: 89493
 scriptlet: 44836
 html: 0
listset (total-discarded, last-updated):
 added:
  adguard-generic: 91484-6818, 1d.21h.5m
 default:
  user-filters: 0-0, never
  ublock-filters: 43483-85, 5m Δ
  ublock-badware: 10984-32, 5m Δ
  ublock-privacy: 3573-4, 5m Δ
  ublock-unbreak: 2715-1, 5m Δ
  ublock-quick-fixes: 450-5, 5m Δ
  easylist: 88144-492, 5m Δ
  easyprivacy: 55085-689, 5m Δ
  urlhaus-1: 26765-6, 5m
  plowe-0: 3485-0, 10d.20h.36m
filterset (user): [empty]
trustedset:
 added: [array of 1 redacted]
userSettings: [none]
hiddenSettings: [none]
supportStats:
 allReadyAfter: 309 ms (selfie)
 maxAssetCacheWait: 87 ms
 cacheBackend: indexedDB

[gorhill]

Extensions are not allowed in sidebar, it's a browser-imposed limitation.