Removing anchor from custom button changes its size

Steps to reproduce:

• Create a custom button
• While in button component file, change the size of it to 300 x 100
• Return to Screen01.ui.qml file
• Drag and drop button to Form Editor
• Anchor button to top of parent with e.g 50 margin
• Remove anchor
• -> Height of the button is changed as seen in Form Editor and Property Editor
• Reset view
• -> Height of button is again 100 as should
• See the attached recording