Yup, known and already fixed issue. Ubuntu 17.04 is packaging 1.90, and the fixes went in after that. It is a complex interaction of theme & gtk version and fixes to get the transparency to work which caused this.
Yup, known and already fixed issue. Ubuntu 17.04 is packaging 1.90, and the fixes went in after that. It is a complex interaction of theme & gtk version and fixes to get the transparency to work which caused this.