uBO not working on pinterest website

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

I have been using uBO for a long time, and it has been working pretty decently, but since this morning it seems to have stopped working on the pinterest website completely. The homepage is still ad-free and I get only normal pins, but when I click on a pin and start to scroll down, 3/4 of the pins I see are ads. (I tried attaching a schreenshot of what I see) The problem seems to only affect pinterest, as all the other websites I opened today were still ad-free.
I use firefox browser, and uBO is the only adblock enabled. I am not perticularly tech-savvy, but as far as I can tell none of my uBO settings have changed, and I certainly didn't mess with it. I tried refreshing the page a couple times and picking out the ads manually, but the situation didn't improve.
What can be done in this situation?

A specific URL where the issue occurs.

https://uk.pinterest.com/

Steps to Reproduce

1. Open pinterest in browser
2. Click on any pin on the home page
3. Scroll down to see other related pins

Expected behavior

I can't see any ads on the pinterest website, because uBO removes them, like it's supposed to do.

Actual behavior

The pins seen when scrolling down are mostly ads. (Any pin that has "sponsored" written underneath it is an ad)

Configuration

Details

uBlock Origin: 1.74.0
Firefox Mobile: 155
filterset (summary):
 network: 183990
 cosmetic: 54942
 scriptlet: 35205
 html: 3826
listset (total-discarded, last-updated):
 default:
  user-filters: 5-0, never
  ublock-filters: 54679-74, 1h.16m Δ
  ublock-badware: 10102-17, 1h.16m Δ
  ublock-privacy: 4138-2, 1h.16m Δ
  ublock-unbreak: 2892-1, 1h.16m Δ
  ublock-quick-fixes: 535-13, 1h.16m Δ
  adguard-mobile: 12841-93, 1d.8h.32m
  easylist: 87776-191, 1h.16m Δ
  easyprivacy: 56575-55, 1h.16m Δ
  urlhaus-1: 46585-11, 2h.15m
  plowe-0: 3540-1118, 8d.7h.35m
filterset (user): [array of 5 redacted]
switchRuleset:
 added: [array of 5 redacted]
userSettings:
 userFiltersTrusted: true
hiddenSettings: [none]
supportStats:
 allReadyAfter: 4341 ms (selfie)
 maxAssetCacheWait: 273 ms
 cacheBackend: indexedDB

[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.

Continue at uBlockOrigin/uAssets#25614