Kneeli - your code shown for HtmlViewer.qml does not match what I have. I'm on SFOS 2.2.0.29 - which version are you using?
function setHtml(html) { }
function setHtml(html) { htmlBody = html experimental.customLayoutWidth = 300 webView.loadHtml(htmlBody, "file:///usr/share/jolla-email") onScreen = true }