XSS false positive. Is haml v6 supported?

[AkshayGoyal022]

Background

Brakeman version: 6.1.2
Rails version: 7.1.5
Ruby version: 3.3.1

False Positive

Full warning from Brakeman:

Confidence: Medium
Category: Cross-Site Scripting
Check: CrossSiteScripting
Message: Unescaped model attribute
Code: Setup.hostname
File: app/views/layouts/_i18n_settings.html.haml
Line: 3

Relevant code:

# app/views/layouts/_i18n_settings.html.haml

:javascript
  $(document).ready(function() {
    var domain = '#{Setup.hostname}' # Fetch value from db
    # ...
  });

Why might this be a false positive?
We recently upgrade to haml 6.3.0 (from haml v5.2.0 ) and we are getting CrossSiteScripting warning for above code. Same warning doesn't come up with haml v5.2.0. Wondering if haml v6 is supported?