The interface seems consistent throughout FigJam, in the same dark gray rounded bars. But when one chooses to add a Hyperlink, or change the font style, the interface becomes white. Maybe not really a bug, but I find this as inconsistent. Unless of course this was a deliberate choice.
Normal interface, always the same dark gray:
White interface for Hyperlink:
White interface for Font size selection:
Why not have everything in the same dark gray style?