I have a website where I have many different languages (English, German, Russian, Old Russian, Polish, French, Italian, Spanish, etc.) and so it is pretty necessary to use a unicode set to accommodate this. For quite awhile, Windows default Unicode set is UTF-16le, so that is what I use, and every page within this site has that coded in the header for browsers to recognise. This site had been tested with Firefox, IE, Opera, Safari, Kylo, and even Netscape, and there was no problem. Within the last couple months, however, Firefox has released updates which have garbled my site, and even when I manually set the encoding to UTF-16le, my links to amazon are rendered completely unusable, and if I navigate away from the page and then click back to a page using the back button, Firefox once again renders it as garbage.