v17.1 - title colors & opacity not working?

Ugraded to 17.1 earlier this week. I'm having trouble getting Title colors to work in edit mode. I can get color to change only by clicking the color box which opens the OS color picker (the picker within Resolve does nothing). But what I can't control at all is the opacity. Even though the color box shows opacity next to it, I have no way of selecting an opacity.
My example: I'm using the "text box swipe in lower third" title. By default the box is white and the text is transparent. I'm trying to get the text to be opaque black.
The only thing I could do was go into Fusion mode and use the color picker there. I selected the box color that was 100% opaque white, which seemed to get the opacity to change, but then when I change the color back to black, it ignores the color completely, leaving the text white on white... making it invisible.
Is this a bug?
My example: I'm using the "text box swipe in lower third" title. By default the box is white and the text is transparent. I'm trying to get the text to be opaque black.
The only thing I could do was go into Fusion mode and use the color picker there. I selected the box color that was 100% opaque white, which seemed to get the opacity to change, but then when I change the color back to black, it ignores the color completely, leaving the text white on white... making it invisible.
Is this a bug?