Unable to log in when editing OSM

[1ec5]

I’m unable to log into OSM when using the Sophox editor. The Login button opens a popup window with about:blank. The following errors appear in the console:

loading undefined undefined undefined wdqs.min.a0a7e58d7dcbd917d6c8.js:1:106282
    loading https://sophox.org/js/wdqs.min.a0a7e58d7dcbd917d6c8.js:1
    authenticate https://sophox.org/js/vendor.min.59bed001244e094669aa.js:1
    xhr https://sophox.org/js/vendor.min.59bed001244e094669aa.js:1
    osmXhr https://sophox.org/js/wdqs.min.a0a7e58d7dcbd917d6c8.js:1
    osmXhr https://sophox.org/js/wdqs.min.a0a7e58d7dcbd917d6c8.js:1
    getUserInfoAsync https://sophox.org/js/wdqs.min.a0a7e58d7dcbd917d6c8.js:1
    resetToolbar https://sophox.org/js/wdqs.min.a0a7e58d7dcbd917d6c8.js:1
    dispatch https://sophox.org/js/vendor.min.59bed001244e094669aa.js:1
    handle https://sophox.org/js/vendor.min.59bed001244e094669aa.js:1

done undefined undefined undefined wdqs.min.a0a7e58d7dcbd917d6c8.js:1:106329
    done https://sophox.org/js/wdqs.min.a0a7e58d7dcbd917d6c8.js:1
    authenticate https://sophox.org/js/vendor.min.59bed001244e094669aa.js:1
    onreadystatechange https://sophox.org/js/vendor.min.59bed001244e094669aa.js:1

To reproduce, use this query being discussed on the forum.