Font plugin doesn't focus in CKEditor after select an item from font drop down in IPad

Hi All,

When I work on CKEditor, I select a Font item from Font button in IPad app, 

The cursor is in CKEditor content, but it does nothing when I type any keys in IPad keyboard.

Only when I focus on CKEditor text area agian, it could work well .

Is it a defect for Font plugin?

Thanks,

Hannah