Color preset selection is not saved in GUI

When I open xfce4-terminal and go to Edit -> Preferences... -> Colors, I can choose a theme from the Presets: Select Preset dropdown. The theme is applied correctly, but after closing and reopening xfce4-terminal, the preset selection is not remembered - the dropdown always goes back to Select Preset. Because of this, I have to remember manually which preset I chose. A little buggy.

:: xfce4-terminal 1.1.5