Some non-breaking spaces are converted to ` ` by seemingly unrelated edits performed by WikEd ([[https://en.wikipedia.org/w/index.php?title=Parkinson%27s_disease&type=revision&diff=791796008&oldid=791791493|example]]).
* [[https://en.wikipedia.org/wiki/User_talk:Cacycle/wikEd#Stop_adding_ |https://en.wikipedia.org/wiki/User_talk:Cacycle/wikEd#Stop_adding_ ]]
It seems that when content is copied from a page that was edited with VE, nbsp characters are added to the clipboard, which thus sneak into the wikicode version as people copy the content into a wikicode editor. While this is NOT proper copy paste behaviour for article content, it is common. As people later on use WikEd to visit, these characters get converted to their entity representation, which makes them more noticeable to people.
# Which browsers are affected (At least Chrome v62)
# Does this happen when copying from the edit surface, from the Read view AFTER saving with VE or the preview surface ?