However, you're not the only person to report this. I suspect that it may only occur when something specific is included in the post, like an excerpt box or something like that. I'll keep checking into it.

Edited to add: Just to be clear, did this happen on the first page where you're asked if you're comfortable enforcing the rule, or did it happen on the next page where you're taken to the post itself?

I could only see box outlines and link buttons when the cursor passed over them.