Hi

I'm building my first block editors and have run into a problem that some of the settings for my blocks break down into regular groups. So I've create a couple of common settings doc types and re-use them on various block settings.

When I do this I cannot get the settings to save of any doc type other than the first one.

First doc type (Image Settings) saves fine. Second one (Advanced) does not save at all and is not passed to BlockListItem when rendering:

The json value does not include the second composition properties. And when you try to render on front end settings with GetBlockListHtml the setting seem to be null.

{
   "layout":{
      "Umbraco.BlockList":[
         {
            "contentUdi":"umb://element/8bea306ead694002b495242684be34a2",
            "settingsUdi":"umb://element/54b2d93f83e9484aaccf373ac4bca4b3"
         }
      ]
   },
   "contentData":[
      {
         "contentTypeKey":"97af064b-37d0-40e6-b0aa-04ae99feb24c",
         "udi":"umb://element/8bea306ead694002b495242684be34a2",
         "images":"umb://media/bdd7fb1813824c70bba1218d46d6e6b6,umb://media/217cd1fc1bb54a58b2e6d3cc4cfe2db4,umb://media/dd01edadee1140d2adbf2354656aeffa"
      }
   ],
   "settingsData":[
      {
         "contentTypeKey":"6262abee-cc52-4702-a413-0a64fbc3c20a",
         "udi":"umb://element/54b2d93f83e9484aaccf373ac4bca4b3",
         "crop":"3",
         "cropMode":"3",
         "enableLightbox":"1"
      }
   ]
}

The doc types here are one for the block editor settings, this has no properties - just two compositions.

Is it possible to use doc type compositions with Block Editors? Hopefully missing something obvious. Many thanks for any input.

Using Umbraco 8.10.1