My Web mail account doesn't auto fill my email signature on my email posts except in "plain text" mode after I upgraded to the current Firefox version. Additionally the window in my Web mail settings is not displaying my signature. This was NOT a problem before upgrading to the new version 55.0.2 (64-bit). I've gone through my Web mail support and they can see my signature in the settings area. After a couple of hours today, they can find no answer other than there is a problem with Firefox. I have uninstalled Firefox per Firefox instructions and then reinstalled. I get the same results with my Web mail. If I use Safari, I see my signature in the settings and it also is auto loaded in my posts in either plain text, rich text, or HTML. Apparently there is a bug. What now?