STEPS TO REPRODUCE:
1. Follow
KB37127: Adding Fonts to the Font Dropdown Menu using MicroStrategy Web SDK 9.4.x-10.x
KB235107: How to Embed a Custom Font Without Having to Install it on the Client Machines using MicroStrategy Web SDK 9.4.x-10.x
to add custom font Annabel Antique Script
2. Create a simple document containing a simple grid
3. Apply custom font to the grid in document ----see the custom font shows in grid
4. Change grid to graph. In editable mode, format graph to make the all text use custom font.--- Not taking effect.

CAUSE:
This is NOT a product defect. Graph is generated from iserver and iserver machine should have custom font installed.
ACTION:
Install custom font in iserver machine and graph can show custom fonts successfully.
KB442215