thefreedictionary.com: detection / ads

Prerequisites

[X] This is NOT a YouTube, Facebook, Twitch or a shortener/hosting site report. These sites MUST be reported by clicking their respective links.
[X] I read and understand the policy about what is a valid filter issue.
[X] I verified that this issue is not a duplicate. (Search here to find out.)
[X] I did not remove any of the default filter lists, or I have verified that the issue was not caused by removing any of the default lists.
[X] I did not enable additional filter lists, or I have verified that the issue still occurs without enabling additional filter lists.
[X] I do not have custom filters/rules, or I have verified that the issue still occurs without custom filters/rules.
[X] I am not using uBlock Origin along with other content blockers.
[X] I have verified that the web browser's built-in content blocker/tracking protection, network wide/DNS blocking, or my VPN is not causing the issue.
[X] I have verified that other extensions are not causing the issue.
[X] If this is about a breakage or detection, I have verified that it is caused by uBlock Origin and isn't a site issue.
[ ] I did not answer truthfully to ALL the above checkboxes.

URL(s) where the issue occurs.

https://www.thefreedictionary.com/advertisement (or any urls in this site)

Description

Site detects adblock and is able to shows some ads.

Other extensions used

No, I tested on new Firefox profile with only uBO(default setting) enabled.

Screenshot(s)

![image](https://github.com/user-attachments/assets/28bea207-cb92-4894-b28d-7d8bf5868d0d)

Configuration

Details

```yaml uBlock Origin: 1.60.0 Firefox: 132 filterset (summary): network: 139719 cosmetic: 48925 scriptlet: 21300 html: 2052 listset (total-discarded, last-updated): default: user-filters: 0-0, never ublock-filters: 40783-132, 1m ublock-badware: 11773-6, 1m ublock-privacy: 1382-22, 1m ublock-unbreak: 2551-1, 1m ublock-quick-fixes: 234-10, 1m easylist: 80295-200, 1m easyprivacy: 53200-64, 1m urlhaus-1: 19810-0, 1m plowe-0: 3542-998, 1m filterset (user): [empty] userSettings: [none] hiddenSettings: [none] supportStats: allReadyAfter: 9792 ms maxAssetCacheWait: 19 ms cacheBackend: indexedDB ```

uBlockOrigin / uAssets