Projects feature authentication problem

I have a similar problem trying to connect to a git repo on an azure devops site, using https.

when pushing the manage remote branch button, I get the authentication windows pop-up.
on entering the username and password nothing happens after confirmation. I get the same authentication window again.
no info in the node-red log console.
in the chrome devtools logconsole I get the following error message:

GET http://localhost:1880/projects/TEXbox_EventService/branches/remote?{} 400 (Bad Request)

running the same get directly in the chrome browser I get some extra info:

{
* code: "git_auth_failed",
* message: "error: cannot spawn C:\Users\psmt\AppData\Roaming\npm\node_modules\node-red\node_modules\@node-red\runtime\lib\storage\localfilesystem\projects\git\node-red-ask-pass.sh: Exec format error bash: /dev/tty: No such device or address error: failed to execute prompt script (exit code 1) fatal: could not read Username for 'https://xxxxxxxx.visualstudio.com': No such file or directory "
}

running on windows 10,
node-red v1.0.6
git version 2.14.2.windows.3

from a git bash in the project folder I can push to the remote.

Any suggestions? Am I doing something wrong?