Show caret when dragging an element in text editor

[martinhonza]

Hi,
https://codesandbox.io/p/sandbox/slate-reproductions-forked-hlvpjh
i am trying to implement drag and drop with slatejs where I wanna drag elements and drop them inside the editor itself, problem is that when I am dragging an element the caret is not showing at the destination.
In the example I have draggable elements, text in contenteditable and image, text and image do show an caret but draggable element no. I am thinking that it's because of the type of dataTransfer ?
Is it possible to somehow resolve this, maybe change the type of dataTransfer to plain text where I would drag an json or something like that ? implementing drop indicator instead of browser caret seems difficult, as it would need to be correctly positioned on line, move by the width of letter, etc...

[martinhonza]

Maybe a bit of progress, I tried to put getInitialDataForExternal: (args) => ({ 'text/plain': 'hello' }) which makes the caret work at the beginning/end of line or in my app it works even if I am slightly under or on top of the line, I can then position the caret inside text. But If I hover directly over the line/text then it doesnt register, onDrag/onDrop event doesn't fire.