Somewhat unrelated, but hopefully this also means TreasuryDirect will get rid of its archaic graphical keyboard that disables the usage of password managers.
(Graphical keyboards are an old technique to try to defeat key loggers. A frequent side effect of a site using a graphical keyboard is that the developer has to make the password input field un-editable directly, which prevents password managers from working, unless you use a user script to make the field editable again.)
Just saying in this in case it will help you. For treasurydirect, you can use inspect element and change the value="" field on the password element, and paste in your password from your password manager. It's not as convenient as autofill from your password manager, but it sure beats using the graphical keyboard.
Thanks! That would definitely be a way to do it. I was hinting at something similar by saying "unless you use a user script to make the field editable again". You could also run a bookmarklet that makes the input editable using JavaScript, and then using the password manager. But it's a pain in any case if you're using the site on a mobile device.
(Graphical keyboards are an old technique to try to defeat key loggers. A frequent side effect of a site using a graphical keyboard is that the developer has to make the password input field un-editable directly, which prevents password managers from working, unless you use a user script to make the field editable again.)