Sometimes artifacts (empty frames, placeholders ..) remain from removed ad

[HelmutL]

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.
• This is not a support issue or a question. For support, questions, or help, visit /r/uBlockOrigin.
• 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.
• uBO uses default lists and settings.
• using a new, unmodified browser profile.

Description

Sometimes (i.e. for some websites), when an advertisement is removed, empty spaces or empty frames remain. Especially on mobile phones this is annoying as you have to scroll over it.

They should be removed.

A specific URL where the issue occurs.

https://www.krone.at/

Steps to Reproduce

open krone.at with ublock origin enabled (firefox extension)

Expected behavior

Empty frames should be removed (as AdGuard extension does)

Troubleshooting information

uBlock Origin: 1.69.0
Firefox: 149
filterset (summary):
 network: 365854
 cosmetic: 276932
 scriptlet: 61402
 html: 3354
listset (total-discarded, last-updated):
 added:
  adguard-generic: 92416-5776, 1d.4h.33m
  adguard-mobile: 12058-57, 1d.4h.33m
  adguard-spyware-url: 2437-135, 1d.4h.33m
  curben-phishing: 160405-48, 23m
  adguard-cookies: 36961-82, 1d.4h.33m
  ublock-cookies-adguard: 5491-76, 1d.4h.33m
  fanboy-cookiemonster: 45412-3644, 1d.4h.33m
  ublock-cookies-easylist: 5491-5491, 1d.4h.33m
  adguard-social: 25799-44, 1d.4h.33m
  fanboy-social: 17356-843, 1d.4h.33m
  adguard-popup-overlays: 30058-1012, 1d.4h.33m
  adguard-mobile-app-banners: 6823-97, 1d.4h.33m
  [8 lists not shown]: [too many]
 default:
  user-filters: 0-0, never
  ublock-filters: 44482-73, 23m Δ
  ublock-badware: 10602-30, 23m Δ
  ublock-privacy: 3617-2, 23m Δ
  ublock-unbreak: 2789-1, 23m Δ
  ublock-quick-fixes: 453-13, 23m Δ
  easylist: 93970-1202, 23m Δ
  easyprivacy: 55402-128, 23m Δ
  urlhaus-1: 26005-5, 23m
  plowe-0: 3504-1101, 1d.4h.34m
  DEU-0: 8166-61, 23m
filterset (user): [empty]
userSettings: [none]
hiddenSettings: [none]
supportStats:
 allReadyAfter: 343 ms (selfie)
 maxAssetCacheWait: 237 ms
 cacheBackend: indexedDB

[HelmutL]

Sorr<, I do not know how the picture of the bird came in by mistake. Please ignore it.

[stephenhawk8054]

• 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.

Report the sites with placeholders issues to uAssets repo using the report button in the uBO popup dashboard.