2057750 - Fullscreen video on youtube is slightly smaller than it should be, leading to black space at the bottom.

Status: UNCONFIRMED

(Firefox for Android :: Media, defect)

Description

[Jbro1626]

Attachment: Screenshot_20260725_114304_Firefox.jpg

User Agent: Mozilla/5.0 (Android 16; Mobile; rv:153.0) Gecko/153.0 Firefox/153.0

Steps to reproduce:

Went to fullscreen on YouTube video.

Actual results:

Video appears slightly smaller than it should be, leading to black space at bottom

Expected results:

Regular fullscreen, full size, no black bar.

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Firefox for Android::Media' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Maia]

I can reproduce this on:
Device: Motorola Moto G86 5G (XT2527-2)
Android: (your Android version)
Firefox: 153 Stable (not Beta)

YouTube videos in fullscreen are rendered smaller than the display with thick black borders.
The issue started suddenly without a Firefox or system update.
The problem does not occur in Brave.
The YouTube Android app displays fullscreen correctly.
Firefox cache/data cleanup and disabling extensions did not resolve the issue.

Comment 3

[Maia]

Attachment: Screenshot_20260725-032741_Moto App Launcher.png

Comment 4

[Maia]

Attachment: Screenshot_20260725-020430_Firefox.png