This is not really a support forum. The only people answering questions here are other users.
My suggestion is to deactivate all other plugins and switch to one of the 20XX themes. If you are still seeing the issue then open a bug report here https://www.advancedcustomfields.com/contact/
If you are not seeing an issue then come back with what other plugin or theme is causing the problem and someone may be able to help you out.
