TBB/ESR45 reports "InvalidStateError" in browser console
An InvalidStateError appears in the browser console, unfortunately with no source filename or line number (only the word <unknown> for source). I tracked this error down to our setting the pref "dom.indexedDB.enabled" to false in 000-tor-browser.js. I haven't yet found where the error is being produced, but I presume it is a .jsm or .js file somewhere in the Firefox codebase, attempting to use an indexedDB.