This is one of those subjects which is operating system dependent. The MacOS version of Scrivener uses the Operating System's own text editing engine. If Apple provides a new text editing feature when it upgrades the operating system then Scrivener also has that feature. As far as I know, Apple's text editing engine displays invisibles in highlighted text.
On a side note: The latest version of Scrivener for the Mac contains a tool in the compiler which is considered experimental (released with trepidation) that allows conversion to .docx files WITHOUT using Apple's conversion tools. So far, the experimental tool seems to produce a better .docx document than Apple's tools do.
However, the Windows version has its own text editing toolset and I am not familiar with the Windows version.
When Google Plus was around, there were a large number of experts on both platforms available and for awhile one of the employees of Literature and Latte fielded these kinds of questions.
Regrettably, I was not able to persuade most of the members of the Scrivener Users group to migrate to Cake. Therefore, your best bet is to post this question in the L&L forums.
MacOS Technical questions: https://www.literatureandlatte.com/forum/viewforum.php?f=2&sid=a234d8ea56242dcc542ebdba0e3d3a84
Windows OS Technical questions: https://www.literatureandlatte.com/forum/viewforum.php?f=30&sid=a234d8ea56242dcc542ebdba0e3d3a84