When editing a QML page in Design mode, switch to "Material" theme and tap "A" to show control bounds. Most control bounds are wildly different from the control - button bounds are 10x the button size!

When double-clicking a Button in Design mode to edit its label, text editing box that shows up is approximately 10x the size of the button itself and occludes a significant portion of the form - a very jarring effect. This also affects some other controls, such as TextInput.