Login Select Doesn't Show Login(s) in Firefox ESR in Private Window

[Ketrel]

Using:
Firefox 52.6.0 ESR
KeePassHttp-Connector: 1.0.11
KeepassXC: 2.2.4

Issue:
On a normal Window on a login page, the Connector Icon shows a matching login and if clicked will say "Select the login information you would like to get entered into the page:" followed by a list of login options.

When in a private Window, everything is the same, but "Select the login information you would like to get entered into the page:" is the only thing shown. The list of logins does not appear.

Additional Information:

• If "Activate autocomplete for username fields." is enabled, this field doe seem to work in both options.
• Nothing shows up in the Firefox console when this error occurs.

[smorks]

i'll do some testing with that version of firefox. thanks!

[Ketrel]

To add, to this which may make it easier to track down, the 'Choose Own Credential Fields for This Page' also does not function in private windows.

The two may be connected.