WYSIWYG height in Settings Page

Hi,

The WYSIWYG option textarea_rows works as well on my demo site, check this screen record https://monosnap.com/file/e1qZwe922sSKj57yRhfTyw4UyB344d

Field code:

[
    'name'    => __( 'Wysiwyg', 'your-text-domain' ),
    'id'      => $prefix . 'wysiwyg_37rhyaja577',
    'type'    => 'wysiwyg',
    'options' => [
        'textarea_rows' => 50,
    ],
],

Hi,

You can try to deactivate all plugins except Meta Box, MB extensions and switch to the standard theme of WordPress (Twenty TwentyTwo) then re-check this issue.