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Submitting content on X not possible in Firefox as of March 10 2026.

Firefox Webbkompatibilitet
MarkRH besvarat
lesleyfrieson
lesleyfrieson

I can submit posts on X using Chrome, but Firefox, for some reason, has cut off the portion of the posting box that contains the submit button and other edit features. It simply vanished as of March 10 2026.

I have attached screenshots showing FireFox vs Chrome.

I cleared cache and cookies to no avail. I have the latest Firefox version. 148.0 64 bit. Windows 11 operating system.

I can submit posts on X using Chrome, but Firefox, for some reason, has cut off the portion of the posting box that contains the submit button and other edit features. It simply vanished as of March 10 2026. I have attached screenshots showing FireFox vs Chrome. I cleared cache and cookies to no avail. I have the latest Firefox version. 148.0 64 bit. Windows 11 operating system.
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Alla svar (4)

MarkRH
MarkRH

Seems to be fine here. Firefox 148.0.2 in Windows 10 Pro. I notice in your screenshots that it has "Drafts" in the upper-right. I don't see that on mine. Hmmm..

MarkRH
MarkRH

Vald lösning

If you happen to use uBlock Origin, might check out https://www.reddit.com/r/uBlockOrigin/comments/1rr3vv8/post_button_disappeared_when_using_twitter/ which indicates a Gen AI Blocklist might be causing it and updating that filter should correct it.

lesleyfrieson
lesleyfrieson Frågans ägare

Thanks for the information! I disabled uBlock Origin on Twitter and the issue is resolved. I learned today that Chrome has disabled uBlock Origin altogether.

MarkRH
MarkRH

Glad you got it resolved. I have uBlock Origin enabled on Twitter and can post fine. Just seemed to be an issue with that one filter which I did not happen to have enabled.

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