Weird Behavior around selecting List Block

[BE-Webdesign]

For some reason once I select the list block I can never escape it being hovered, there is an error somewhere in TinyMCE shown below. That triggers:

The given range isn't in document.
setRng @ tinymce.min.js?ver=4.7.4:5
(anonymous) @ tinymce.min.js?ver=4.7.4:12
e @ tinymce.min.js?ver=4.7.4:7
fire @ tinymce.min.js?ver=4.7.4:7
e @ tinymce.min.js?ver=4.7.4:9
a @ tinymce.min.js?ver=4.7.4:1
v @ tinymce.min.js?ver=4.7.4:1
setRng @ tinymce.min.js?ver=4.7.4:5
moveToBookmark @ tinymce.min.js?ver=4.7.4:5
moveToBookmark @ tinymce.min.js?ver=4.7.4:5
value @ index.js?ver=4.7.4:6
value @ index.js?ver=4.7.4:6
m @ react-dom.production.min.js:7
i @ react-dom.production.min.js:7
l @ react-dom.production.min.js:7
s @ react-dom.production.min.js:7
c @ react-dom.production.min.js:7
h @ react-dom.production.min.js:7
g @ react-dom.production.min.js:7
N @ react-dom.production.min.js:7
Ke @ react-dom.production.min.js:4
gi @ react-dom.production.min.js:6
Ye @ react-dom.production.min.js:4
qe @ react-dom.production.min.js:4
dispatchEvent @ react-dom.production.min.js:6

Anyone else experience this? It then seems to prevent the selected state for any block being updated. If a new block is inserted that block permanently becomes the selected block. Other blocks don't trigger the TinyMCE error.

[BE-Webdesign]

Duplicate of #502, closing.