Image picker on specific pages

Hi !

I love your plugin but I have a little problem.
I’m using Metabox to display an advanced image upload field on a specific page (specified by id) to set up a cover photo for the homepage.
The field is displayed in the admin of the good page but I can’t select any photos.

If I don’t specify the metabox to display only on a page there is no problem but I don’t want all my pages to have this metabox.

Do you know why is it happening ?

Thanks a lot for your work,
best regards,

Johann

https://wordpress.org/plugins/meta-box/