Breadcrumb bar doesn't strip formatting characters for display

Hallelujah, that fix is long overdue. I noticed instead of stripping MD, we’re actually applying it, including hyperlinks, so I hope that doesn’t open up the possibility of some other defects. But it looks great so far in my testing, thanks!

For the quick open comment from Nov '17 above, I noticed this can be handled by renaming bookmark to remove the MD formatting chars that were there before.