gtk3: honour the control region height if it is larger
gtk3: honour the control region height if it is larger

Change-Id: I99a5a597dbc14521b27f9149411199d23b907c1e

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core