Custom key signatures do not show
1- Create a new score;
2- Open Master Palette;
3- Create a custom key signature and add it to the palette;
4- Drag-and-drop the cusotm key signature on the score, e.g. to the first measure.
The custom key signature is added to the score and is shown.
The custom key sigmature does not appear.
However, it is present in the score: if you save the file you can see that the custom key signature information is saved in the file.
Windows 8.1, commit c42a12d