Ckeditor in ipad safari

ckeditor in ipad safari

I have a problem with ckeditor on ipad. I have the editor in a bootstrap modal. all work well on the other browsers, but on ipad safari, when you touch inside the editor, the keyboard does not appear so you cannot write anything in it. If you hit one of the buttons like bold, the keyboard will appear after a while.

this is how I initialise the ckeditor:

CKEDITOR.replace( 'text_to_add', {
    toolbar: [
        { name: 'basicstyles', groups: [ 'basicstyles', 'cleanup' ], items: [ 'Bold', 'Italic', 'Underline', 'Strike'] },
        { name: 'paragraph', groups: [ 'list', 'indent'], items: [ 'NumberedList', 'BulletedList', '-', 'Outdent', 'Indent', '-', 'Blockquote'] },
        { name: 'links', items: [ 'Link', 'Unlink'] },

        { name: 'styles', items: [ 'Styles', 'Format', 'Font', 'FontSize' ] },
        { name: 'colors', items: [ 'TextColor', 'BGColor' ] },
    enterMode: CKEDITOR.ENTER_BR

Do you have any idea on how to fix this issue?