Hm, raw output script should be in hex form. It looks like this variable is filled directly from the database (https://github.com/spesmilo/electrum-server/blob/master/backends/abe/__init__.py), so maybe this is related to version of Abe and/or postgresql driver in Abe?

I know that Abe is doing wild variable conversions for keeping compatibility with wide area of databases, so maybe this is question to Abe developers, more than Electrum developers...