Fix – YouTube Shows White Box over Bottom Half of Video in Firefox 75

    The following blog post has instructions on how to fix YouTube shows white box over bottom half of video in Firefox v75.

    Mozilla recently rolled out the latest version of its browser i.e. Firefox v75. The browser has a new address bar, default browser agent and even more. Every update not only bring latest feature but also bring bugs and issues and same in the case of Firefox v75.

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    Fix – YouTube shows white box over bottom half of video

    Majority of the users reporting on this Reddit thread that after updating Firefox browser to latest version YouTube is broken. YouTube shows white box over bottom half of video. After you move mouse in the screen element, it start working normally.

    You can check following screenshot for an idea:

    Fix - YouTube Shows White Box over Bottom Half of Video in Firefox 75

    If you’re reading this blog post, then chances are you’re also facing the same issue.

    So you might be wondering what causing the issue right? The truth is that Firefox is not causing the issue and its issue from YouTube side. Mozilla is aware of the issue. In the meantime, following are the two methods which you can use to fix the issue.

    Edit Firefox Preference

    In the Firefox New Tab Page, you need to visit About:Config

    Next, you need to click on the ‘Accept the risk and continue‘ button.

    In the Advanced Preferences page, you need to search for preference calledprivacy.resistFingerprinting.

    Firefox preference privacy resist fingerprinting

    When it appears in the search results, click on the Toggle button available on the right side to change the settings from True to False.

    Relaunch the browser to apply the changes. Doing this will fix the issue.

    Filter Element using Ublock Origin

    In case, you’re using Ublock Origin add-on on your Firefox browser, then can you can block ytp-gradient-bottom element

    For that, Click on the add-on icon and then click on the ‘Open the dashboard‘ icon.

    block youtube element using Ublock origin

    Next, you need to copy-paste and then click Apply changes button.

    block youtube element using Ublock origin

    Relaunch browser and this should fix the issue.

    You can check out following Youtube video for step by step instructions:

    Is your YouTube affected? Do you manage to fix this issue using the methods discussed above? Let us know in the comments.

    Viney Dhiman
    Himachali, Mechanical Engineer, Snooker Lover, Avid drinker of Scotch, Traveler, and Webmaster. (

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