Materials combobox sometimes highlighted when selecting 3D component in Navigator

Please see attached recording.

Steps to reproduce:

• Create/open a project
• Import attached 3D asset to the project
• Double click 3D asset in Components view to edit it
• Open Navigator and Properties view
• Click door_rear_right component in Navigator
• -> Properties -> Model -> Materials combobox looks as expected, no highlight
• Click taillight_right component in Navigator
• -> Materials combobox is now highlighted for no obvious reason. Would expect to see highlight/selection only if I click the combobox.