Steps to reproduce:

• create a simple QML project e.g. from template
• have the qml file open, switch to Design view
• click on the color property of the window / rectangle component or similar
• QC crashes

Note: this might be related to QC not being able to use HTTPS here (incompatible ssl version for Qt which comes with QC and system ssl libs)

[I have e.g. following output on the cmdline

QmlDesigner::FileDownloader::start()::<lambda()> QUrl("https://cdn.qt.io/designstudio/bundles/textures/texture_bundle.zip") "TLS initialization failed" 

]