Some time when you custom font in your project, and the font display not correctly, so how to fix that:
Step 1. Download Apple Font Tool Suite command line utilities.
Step 2. Go to the folder which contains your font and run command to get font’s details:
ftxdumperfuser -t hhea -A d Bold.ttf
Step 3. It will generate Bold.hhea.xml automatically, open it and edit ascender value. In my case I changed it from 750 to 1200
Step 4. Change vetical aligment for your font:
ftxdumperfuser -t hhea -A f Bold.ttf
And now your font is updated!!!