Slate crashes when arrowing into or out of table with colgroup/col nodes

[instadrew]

Hello Slate Community,

I have run into what I think may be a Slate bug, but I'm not sure and thought I'd ask here first. I'm trying to render a table in Slate with a <colgroup> and several <col> sub-elements (there are styles on the <col> sub-elements in what I'm really doing, but not in the code sandboxes cited below as they are not needed for demo purposes). The rendering part works fine. The problem I have run into is that if I place the cursor in the top left cell of the table, and then press the left arrow key repeatedly so as to move the cursor out of the table , the Slate editor crashes and I get the following:

Error
Cannot resolve a DOM node from Slate node: {"text":""}

The same thing occurs if I place the cursor before the table and then press the right arrow key repeatedly so as to move the cursor into the first table cell.

Another table without a colgroup, but otherwise the same structure as the above, does not produce this error.

I'm guessing that Slate is trying to map a text child node from one of the col nodes to an HTML node, doesn't find one, and then crashes. I don't know what else to do with this since all nodes other than text nodes require a children property.

A demo of the above can is available here: https://codesandbox.io/s/silly-ptolemy-5ho3uz

Note that I have also tried defining the col nodes as text nodes, but this creates a DOM structure that looks invalid to me (i.e. <span data-slate-node="text"><col></span> for each col node) and produces the same type of error anyway:

Error
Cannot resolve a DOM point from Slate point: {"path":[2,0,0],"offset":0}

A demo with the col nodes defined as text nodes can be found here: https://codesandbox.io/s/muddy-cdn-b098mm

Is this a Slate bug, or am I doing something wrong with how I have attempted to define and render the colgroup and col nodes? Are there any workarounds to prevent Slate from crashing in these scenarios?