Possible Bug:

Hi! I noticed this never had any explanation as to why it has been disabled, but custom hyperlink buttons (can be found in "ui_template_buttons.json") were broken after Minecraft bedrock version 1.2. I figured since this was never brought up it could be a potential bug. 

 

Example:

{
  "hyperlink_button@common_buttons.light_text_button": {
    "$pressed_button_name": "",
    "property_bag": 

{       "#hyperlink": "https://bugs.mojang.com/projects/MCPE/summary"     }

  }
}
This button will not open any webpages, it will just leave you on what ever menu you are on.