AMAC (Association of Mature American Citizens) publishes a compendium of articles which are emailed to its membership. Each mailing contains a brief outline of several articles and links to those articles. A sample of the compendium may be accessed at the following link: [http://example.com https://mail.yahoo.com/d/folders/1/messages/ADLT61oJh8E3YvqSbAIXKGeDHxg?.intl=us&.partner=sbc&.lang=en-US] The problem is that attempting to link to any of the articles results in a message : "invalid request". It is easy to see why the request is invalid, since part of the address is missing. For example when I try to open the first article, this is all that seems to get transmitted: https://content.amac.us/?fopZ8SKvOHN.khHt8p1u4oaGdSIeSdDVf= I don't think an address can end in =. Also when I use other browsers, such as MS Edge, the complete address is accessed and the articles open properly. So I'm wondering if this is a programing glitch or a censorship issue on the part of Mozilla. I have used Firefox for years with no problem, including accessing the AMAC articles. This is a recent problem. AMAC's newsletter is the only issue I have with Firefox.