Not working in Grid / EE3

[jcogs-design]

If you try to define a CM field within a grid definition there are a three warnings given in the grid definition box, but you can define the field. However the field itself is not functional when you try and enter data in a channel entry.

The warnings are:

Warning

Invalid argument supplied for foreach()

ee/EllisLab/ExpressionEngine/View/_shared/form/fieldset.php, line 23

Warning

array_keys() expects parameter 1 to be array, null given

ee/EllisLab/ExpressionEngine/View/_shared/form/fieldset.php, line 49

Warning

Invalid argument supplied for foreach()

ee/EllisLab/ExpressionEngine/View/_shared/form/fieldset.php, line 101

Is this field meant to work within Grid? I realise it is not explicitly listed in MD file, but I see that it set to work within Matrix. Would be handy if it was working in Grid - if not possible perhaps modifying to remove field from Grid options... ?