AdGuard extension for Firefox causes 60-120 seconds delay in loading Stripe-powered payment forms

@adguard-bot commented on [Tue Apr 11 2023](https://github.com/AdguardTeam/AdguardFilters/issues/147943)

### Issue URL (Incorrect Blocking)
[https://www.treetix.com/buytix.cfm?id=198538&cal=highwatermark](https://adguardteam.github.io/AnonymousRedirect/redirect.html?url=https%3A%2F%2Fwww.treetix.com%2Fbuytix.cfm%3Fid%3D198538%26cal%3Dhighwatermark)
### Comment
Username: @LionelHolt
> The page has an order form which uses Stripe.com's JavaScript API. The CSP reports delay the display of the page by about 60 seconds!

### Screenshots

Screenshot 1


Screenshot 2


### System configuration

Information | value
--- | ---
AdGuard product: | AdGuard Browser extension v4.1.53
Browser: | Firefox
Stealth mode: | disabled
Filters: | Ad Blocking:
AdGuard Base

Other:
Filter unblocking search ads and self-promotion

Language-specific:AdGuard French,
AdGuard Russian,
AdGuard Chinese,
AdGuard German,
AdGuard Japanese,
AdGuard Dutch,
AdGuard Spanish/Portuguese,
Bulgarian list,
EasyList Czech and Slovak,
EasyList Italy,
Liste AR,
AdBlockID,
Hungarian,
ABPVN List,
Official Polish filters for AdBlock, uBlock Origin & AdGuard,
List-KR,
Adblock List for Finland,
Polish Anti Adblock Filters
Other extensions used: | OneTab, Video DownloadHelper, Privacy Pass, Gnome Shell Extensions, Maximize All Windows

---

@zloyden commented on [Tue Apr 11 2023](https://github.com/AdguardTeam/AdguardFilters/issues/147943#issuecomment-1503146685)

Not reproduced it with AdGuard filters. Try to check the site only with them and without other extensions.

---

@adguard-bot commented on [Wed Apr 12 2023](https://github.com/AdguardTeam/AdguardFilters/issues/147943#issuecomment-1505918187)

### Issue URL (Incorrect Blocking)
[https://www.treetix.com/_DEV_/adguard-stripe-issue.html](https://adguardteam.github.io/AnonymousRedirect/redirect.html?url=https%3A%2F%2Fwww.treetix.com%2F_DEV_%2Fadguard-stripe-issue.html)
### Comment
Username: @LionelHolt
> In Firefox 111 tested in Windows 10 and Ubuntu, when a page contains , AdGuard AdBlocker triggers csp-report uploads to q.stripe.com. This happens even when either site is added to the Allowlist. The triggering of CSP reports potentially interferes with the performance of the page because it is not fully loaded until the csp-report POST responses are done, which can take 90-120 seconds.

### Screenshots

Screenshot 1


Screenshot 2


### System configuration

Information | value
--- | ---
AdGuard product: | AdGuard Browser extension v4.1.53
Browser: | Firefox
Stealth mode: | disabled
Filters: | Ad Blocking:
AdGuard Base

Other:
Filter unblocking search ads and self-promotion

Language-specific:AdGuard French,
AdGuard Russian,
AdGuard Chinese,
AdGuard German,
AdGuard Japanese,
AdGuard Dutch,
AdGuard Spanish/Portuguese,
Bulgarian list,
EasyList Czech and Slovak,
EasyList Italy,
Liste AR,
AdBlockID,
Hungarian,
ABPVN List,
Official Polish filters for AdBlock, uBlock Origin & AdGuard,
List-KR,
Adblock List for Finland,
Polish Anti Adblock Filters
Other extensions used: | all other extensions disabled for verification of this issue

---

@LionelHolt commented on [Fri Apr 14 2023](https://github.com/AdguardTeam/AdguardFilters/issues/147943#issuecomment-1507754977)

After two escalations with Stripe Support I received a reply from Thomas in the dev team:

"We do see those requests and they are caused by the extension itself apparently injecting a script in our own iframe which violates our own CSP rules. We made an infrastructure change on our end to make those CSP reports requests a lot faster. This should alleviate the issue though it could happen again over time as it depends a lot on the volume of requests those servers get."

So AdGuard still has a negative impact on Stripe-powered payment forms for Firefox users.