You can show and hide the mini toolbar for an object.
Procedure
Select an object in the model. The mini toolbar is shown as transparent. When you move the mouse pointer over the mini toolbar it becomes opaque. Now you can configure the mini toolbar, or click the Connection symbol or object symbols.
If you want the mini toolbar to be hidden only temporarily while the mouse pointer is not over the object, move the mouse pointer away from the object until the mini toolbar is hidden. As soon as you move the mouse pointer back towards the object, the mini toolbar is shown again.
If you do not want the mini toolbar to be shown for a selected object anymore, move the mouse pointer several centimeters away from this object. The mini toolbar is hidden and is then no longer shown when you position the mouse pointer over the object. It will be visible for the object again only if you cancel the selection and select the object again.
Depending on your action, the mini toolbar is either shown or hidden for an object.