Embedded Twitter Tweet Button issue with Release 79.0 Desktop
Here is a Jsfiddle URL URL which points to Twitter Tweet Button JS / HTML code which I am attempting to embed into a website.
When I load the above in Google Chrome 84 the Tweet Button appears and I can share out the URL of the web page in which the Tweet button is embedded, with no unexpected results.
When I try to do the same with Mozilla Firefox 79.0, in Private Mode, and disabling uBlock extension, the Tweet button does NOT appear, only the "Tweet" text. When I click on the Tweet text, I can not share out the URL as expected.
I am wondering what specifically in Mozilla Firefox could be introducing the problem.
Modified by Chris Vitalos
Chosen solution
My guess before clicking your link is Enhanced Tracking Protection. If the shield at the left end of the bar has turned from gray to a shade of purple, something is being blocked, and that often includes Twitter.
More info on this feature: Enhanced Tracking Protection in Firefox for desktop
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Here is a JsFiddle URL with the code snippet for testing.
Chosen Solution
My guess before clicking your link is Enhanced Tracking Protection. If the shield at the left end of the bar has turned from gray to a shade of purple, something is being blocked, and that often includes Twitter.
More info on this feature: Enhanced Tracking Protection in Firefox for desktop
Actually it was due to conflicts with add ons.
When I started firefox under safe mode to disable the add ons, and opened the jsfiddle URL, the Tweet button appeared.
Thanks for the input.