Firefox 54 Where’s my checkboxes?

I am on Firefox 54 on Ubuntu and just noticed that any implementation of the HTML checkbox shows up as a tiny dot instead of a checkbox. Chromium browser is normal.

I first noticed when I went to check my settings in FBP (Facebook Purity add-in for Firefox). But I confirmed it on an HTML test site:

Firefox looks like this:


Chromium looks like this:


I tried searching for a solution, but only got a zillion unrelated results.

UPDATE: I found that starting Firefox in safe-mode (Help, restart with addons disabled) turned checkboxes back to normal, but disabling them one-by-one did not have the same effect. So something in a setting somewhere in FF is doing this, I just have to narrow it down.

UDATE AND FIX: Shawn made a comment that pointed me to the fix. I went into /home/jw/.mozilla/firefox/xs0s2w1w.default-1385691302373/chrome/ and edited the file “userContent.css”.  I put a “/*” at the very beginning and a “*/” at the very end to make it all into a comment. Saved it. Restarted Firefox and the checkboxes have returned. Note that your exact path will be different. Look for the hidden folder .mozilla in your home user folder (CTRL+H to toggle seeing or hiding hidden folders).


4 thoughts on “Firefox 54 Where’s my checkboxes?

  1. I have the exact same issue. Any luck so far?

    I know that GTK themes affect checkboxes and text entry boxes, I wonder if they made a change to the default theme that caused the issue. I may try changing the theme temporarily for firefox. (There are ways to test it, search google for “dark gtk theme firefox”)

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