Secure Shopping causes explorer to crash

I have been a Microsoft Insider for two years and have had issues from time to time with CIS but generally have sorted them out without too much issue. However I had a recent set of issues with builds past 16193 where the desktop was virtually empty and explorer would crash as it started. For several builds I simply went back to the previous working one. Yesterday the same thing happened with 16232 but this time I decide to look further and found that the problem was being caused by Secure Shopping, and having remove it my machine is working OK on the latest build.

Now an even more frightening version for non-Insiders. My desktop, which runs standard builds, just updated to version 1703 (KB4022716) and exactly the same thing happened. Very worrying.