The problem only appears when using any assortment of keys for the summon accelerator that includes the Shift key. If I do use the Shift key, Do will open normally when the shortcut is pressed, but will not close if I press the shortcut again. Then the only way to close Do is to press Escape or click away. If I use a shortcut for the summon accelerator that does not use the Shift key it works as expected.
The problem only appears when using any assortment of keys for the summon accelerator that includes the Shift key. If I do use the Shift key, Do will open normally when the shortcut is pressed, but will not close if I press the shortcut again. Then the only way to close Do is to press Escape or click away. If I use a shortcut for the summon accelerator that does not use the Shift key it works as expected.