Comment 22 for bug 1770587

(In reply to Chris from comment #0)

> Steps to reproduce:
>
> Installed. Skipped adding account. Went to preferences and set options then
> closed. ...........
>
After reading a similar case report in the German "Thunderbird Mail DE" forum I revisited this bug report. In my first comment (#5) I had reported that I could not reproduce the reported issue in a new profile.
This time I tested my existing profiles and could reproduce the issue in three of five profiles:
in the faulty profiles going to menu File > New > Get a New Mail Account... (or clicking on "Email" beyond "Create a new account" in the Account Central Grid) would open an unresponsive drop-down window "Would you like a new email address" with no username filled in the upper field such as shown in attachment 8794558.
The same issue was reproduced in Thunderbird safe mode.

The Error Console shows the following warning:

SecurityError: The operation is insecure. accountProvisioner.js:254
 EAP_init chrome://messenger/content/newmailaccount/accountProvisioner.js:254:16
 NewMailAccountProvisioner chrome://messenger/content/accountUtils.js:415:3
 CreateNewAccountTB chrome://messenger/content/msgAccountCentral.js:291:9
 onclick chrome://messenger/content/msgAccountCentral.xul:1:1

Finally I had a look into the Thunderbird > Preferences > (Tools > Options for Windows users) and found that the faulty profiles had the option "Accept copies from sites" un-checked under "Privacy". As soon as I activated this option, the drop-down window "Would you like a new email address" would open with the username filled in and with buttons being responsive again.

I’m not sure whether this is a bug or a feature....