When a QML file is inside a subdirectory then it will not pick up any of the extra fonts for use in the Property Editor

When a QML file is inside a subdirectory then it will not pick up any of the extra fonts for use in the Property Editor. If the QML file is in the root directory then it will find it fine. In the example, if either main.qml or Blah.ui.qml is selected then neither of these will show Roboto in the list of Fonts for the Text item. But if either Test.ui.qml or AnotherTest.ui.qml is used then it shows up there fine.