Bluebook Citation Form
I have a Zotero database made in the usual name with the journals' names fully typed out. When I used bluebook form to create citations for a law review article, it did not abbreviate the journal names as Bluebook form requires. I feel this is so fundamental that it's false advertising to claim that the program supports Bluebook citations. I tried updating this with a 2019 update and it made no difference.
Jurism is much better able to handle all of the complexity and inconsistencies of legal citation than Zotero. If you are doing legal citation, I suggest you use Jurism. See here for more information https://juris-m.github.io/indigobook/