El Capitan spotlight broken
I upgraded to El Capitan on my work iMac and immediately noticed Spotlight is now broken.
In the office we use a reference number system whereby we name our files in the format as xxxx-xx-xx. I've noticed that when I search using Spotlight, be it in the Spotlight window, Mail.app search box, Finder search box or wherever there is a search field and Spotlight is involved I get no search results if the search string is over 8 characters long and contains a special character like a dash, a period or forward slash for example. An @ symbol is fine however.
As an example if I run a search in Mail for an email containing '1234-56-78' I get NO results returned. If however I remove one of the dashes (doesn't matter which one) I get results appearing. The same happens if I remove both dashes.
Again in Mail; If I search for 'john.appleseed@apple.com' I get no results returned. If I remove the period between 'john' and 'appleseed' I get results.
While testing this as I type it does not seem fully related to 8 characters length although this is when is it most prevalent. It seems its mainly related to special characters and Spotlight not handling them very well.
Can someone create a folder on their desktop called '1234-56-78' and then try searching for it using both Spotlight and a search via a Finder window and let me know you're results? If you get no results try taking out a dash and see what happens.
I've reindexed Spotlight about 5 times and have now filed a bug report with Apple.
iMac, OS X El Capitan (10.11)