Tokenizer should only run on fulltext fields

Hi -

I'm not sure if this belongs in the Search API issue queue or the Search API Solr issue queue, so I'll start here. I'm running the latest dev versions of everything - I'm using Search API with the Solr backend. The search index I'm trying to build is based on nodes. Whenever I try to index something, I get an error message, which stems from the Solr backend.

What's happening is that I'm trying to index node titles as Strings, not Fulltext, so that I can use them for sorting (I also have the Search API Sorts module). Even though I thought the Tokenizer processor was only supposed to run on Fulltext fields, it's running on the node titles (Strings) as well. This causes an array of values to be sent to Apache Solr. Since Apache Solr recognizes the node title field as "ss_title," it chokes on the array (expecting a single value instead), and I get messages like this in the dblog:

HTTP ERROR: 400
ERROR: [default_node_index-115] multiple values encountered for non multiValued field ss_title

I can help with this further and look into making a patch, but I'm not sure where in the pipeline this problem should be solved. Should the tokenizer not run on String fields? Should the Solr backend implode arrays when it receives them for single-valued fields? Let me know what you think - or if you think this is a special case stemming from something weird I did on my site.

Thanks - and also, thank you for this incredible module and all the time you put into this issue queue. The Drupal community is lucky to have people like you.