The is that issue. How can I solve this? Please look at the video:
Did you try doing it in two or more smaller steps?
Please send us the font project so we can look into it.
I sent the project. Thank you. And I do it in one step.
This update should solve the issue:
https://www.high-logic.com/tmp/fontcreator/FontCreatorSetup15.0.0.2973-x64.exe
Please let us know your results.
Thank you. The issue is solved.