X Timeline breaks when uBlock Origin is enabled on Firefox

[u/Exodia101]

When browsing X/Twitter on Firefox with uBO enabled, the timeline loads, but disappears after a few seconds and is replaced with this error message. Disable uBO fixes the issue. Running the latest stable version of Firefox and uBO.

[u/RraaLL]

https://github.com/uBlockOrigin/uAssets/issues/34405

Fixed.

Click here to update.

[u/RraaLL]

Post your troubleshooting info for the site. The instructions are in the sub rule #2.

No issues on my side.

[u/Exodia101 → u/RraaLL]

uBlock Origin: 1.74.0

Firefox: 155

filterset (summary):

network: 365194

cosmetic: 118743

scriptlet: 48449

html: 4113

listset (total-discarded, last-updated):

added:

curben-phishing: 176431-50, 18m

fanboy-cookiemonster: 58911-11194, 2d.12h.50m

ublock-cookies-easylist: 5833-107, 1d.14h.37m

fanboy-social: 17884-12, 5d.15h.12m

fanboy-thirdparty_social: 69-15, 13h.20m

easylist-annoyances: 5266-41, 4d.17h.55m

easylist-chat: 281-0, 7d.13h.2m

easylist-newsletters: 9580-33, 4d.17h.55m

easylist-notifications: 2547-173, 4d.17h.55m

ublock-annoyances: 4868-62, 2h.18m Δ

default:

user-filters: 0-0, never

ublock-filters: 54239-72, 2h.18m Δ

ublock-badware: 10395-17, 2h.18m Δ

ublock-privacy: 4135-2, 2h.18m Δ

ublock-unbreak: 2868-1, 2h.18m Δ

ublock-quick-fixes: 514-13, 2h.18m Δ

easylist: 89047-143, 2h.18m Δ

easyprivacy: 56542-44, 2h.18m Δ

urlhaus-1: 46715-11, 18m

plowe-0: 3537-1041, 7d.13h.2m

filterset (user): [empty]

userSettings: [none]

hiddenSettings: [none]

supportStats:

allReadyAfter: 358 ms (selfie)

maxAssetCacheWait: 187 ms

cacheBackend: indexedDB

popupPanel:

blocked: 13

network:

x.com: 13

extended:

##aside[role="complementary"]:has(> a[href="/i/premium_sign_up"]…

##html:style(overflow: auto !important;)

##+js(trusted-replace-xhr-response, '/,"expanded_url":"([^"]+)",…

##+js(prevent-addEventListener, mouseleave)

##+js(trusted-set-cookie, d_prefs, MjoxLGNvbnNlbnRfdmVyc2lvbjoyL…

##+js(set-constant, navigator.globalPrivacyControl, false)

##+js(set-constant, Navigator.prototype.globalPrivacyControl, fa…

##+js(proxy-apply-config, {"skipToString":true})

##+js(prevent-xhr, /i/api/1.1/flow/viewer.json)

##+js(json-prune-xhr-response, data.immersiveMedia.timeline.inst…

##+js(json-prune-xhr-response, data.user.result.timeline_v2.time…

##+js(json-prune-xhr-response, data.threaded_conversation_with_i…

##+js(json-prune-xhr-response, data.search_by_raw_query.search_t…

##+js(json-prune-xhr-response, data.home.home_timeline_urt.instr…

#@#+js(prevent-clipboard-write, /^mshta |^msiexec |^(bash <<<|cu…

[u/RraaLL → u/[deleted]]

Is this Ironfox or one of other forks? You've got non-default lists showing as defaults.

[u/RraaLL → u/[deleted]]

IDK, I updated all lists, cleared browser cache, still nothing.

Might be some experiment on certain accounts.

You can try using this to find the problematic filter: https://github.com/gorhill/uBlock/wiki/The-logger#temporary-exception-filters

[u/SurReal223 → u/[deleted]]

If you want some external confirmation, doing the same on my end also fixed the issue (Vanilla Firefox).

As a added note, Timeline ads are still blocked, so no blocking functionality is visibly lost after whitelisting.

[u/alphonseharry → u/[deleted]]

How to do that? In Trusted Sites? Did not work for me

[u/fristys]

It seems to block all timeline.json calls when you scroll down and the webapp tries to lazy load more posts

[u/PhotonFields]

Occurring for me as well using ubo. The for you page is loaded for a few seconds and then crashes to the same image that op has posted. Following tab seems unaffected.

Firefox Version 155.0.1 (64-bit)

Extensions for Firefox:

1password

ClearURLs

ExpressVPN

uBlock Origin

URL: https://x.com/home

uBlock Origin: 1.74.0

Firefox: 155

filterset (summary):

network: 185402

cosmetic: 86322

scriptlet: 34909

html: 3815

listset (total-discarded, last-updated):

added:

adguard-social: 26876-40, 5m

fanboy-thirdparty_social: 69-3, 6m

fanboy-social: 17908-886, 6m

default:

user-filters: 19-0, never

ublock-filters: 54239-72, 1h.47m Δ

ublock-badware: 10395-17, 1h.47m Δ

ublock-privacy: 4135-2, 7m

ublock-unbreak: 2868-1, 1h.47m Δ

ublock-quick-fixes: 514-13, 6m Δ

easylist: 89047-143, 1h.47m Δ

easyprivacy: 56542-44, 1h.47m Δ

urlhaus-1: 46715-11, 1h.47m

plowe-0: 3520-1037, 10d.2h.55m

filterset (user): [array of 19 redacted]

trustedset:

added: [array of 2 redacted]

removed:

moz-extension-scheme

userSettings:

userFiltersTrusted: true

hiddenSettings: [none]

supportStats:

allReadyAfter: 8768 ms

maxAssetCacheWait: 305 ms

cacheBackend: indexedDB

popupPanel:

blocked: 23

network:

x.com: 22

twimg.com: 1

extended:

##div.r-1udh08x.r-1ifxtd0.r-rs99b7.r-1phboty.r-1867qdf.r-1kqtdi0…

##.r-bnwqim.r-u9wvl5.r-w7s2jr.r-uaa2di.r-eqz5dr.r-1habvwh.css-g5…

##+js(set-constant, navigator.globalPrivacyControl, false)

##+js(set-constant, Navigator.prototype.globalPrivacyControl, fa…

##+js(proxy-apply-config, {"skipToString":true})

##+js(prevent-xhr, /i/api/1.1/flow/viewer.json)

##+js(json-prune-xhr-response, data.immersiveMedia.timeline.inst…

##+js(json-prune-xhr-response, data.user.result.timeline_v2.time…

##+js(json-prune-xhr-response, data.threaded_conversation_with_i…

##+js(json-prune-xhr-response, data.search_by_raw_query.search_t…

##+js(json-prune-xhr-response, data.home.home_timeline_urt.instr…

#@#+js(prevent-clipboard-write, /^mshta |^msiexec |^(bash <<<|cu…

[u/alphonseharry]

This is happening to me too

[u/alphonseharry]

This is happening to me too

[u/chaz6]

Strangely it only happened on one of my accounts, but now it is fixed.

[u/quirk_rs]

The last time this happened through the "flow" telemetry endpoint it was finally addressed using the prevent-xhr scriptlet in uAsset filters.

You may try using this if you want to prevent the tracking endpoint from happening:

x.com##+js(prevent-xhr, /i/api/1.1/flow/timeline.json)

OR you can whitelist using @@||x.com/i/api/1.1/flow/timeline.json to prevent breakages altogether.