Following the description here to make an Lightning Component available in Visualforcehere to make an Lightning Component available in Visualforce, I found, that the Lightning App does no longer work as expected as a Standalone App via
/c/appName.app
The js code and the callouts seem to be happen, but the screen stays just empty. The reason is the presence of
extends="ltng:outApp"
Is that behavior intended this way, so that an app can only be used either Standalone OR extending ltng:outApp and never both at the same time?
