@LevKanter I haven't managed to reproduce the issue locally. I did notice another issue (#38) that I am hoping is the reason for the issue you're seeing. Could you pull and retry?

If you still experience the issue could you give me full steps to repro? Please try list everything, it might be caused by a series of things.

@fredevery thanks - I am still reproducing that issue after pulling/rebuilding/retrying.

The steps I'm taking are as follows:

• After yarn build and yarn local_server, load the page http://localhost:4848/
• Tripple click on the third paragraph to select it and bring up the toolbar:
  
• Toggle any of the block-level formatters (toggling 'bold' and 'italics' doesn't cause any problems). For example, toggle 'h1':
  
  The error fires before it looks like any content markup is changed.

@fredevery just curious, can you clarify what the no-open-tag and no-close-tag tags that have been added to the preview consoles are for?

@LevKanter As mentioned the blockquote range bug has a fix in the PR for issue 9.

The no-open-tag/no-close-tag tags are there as a visual debug aid, in case, for any reason tag pairs go awry.