I'll confess that I haven't looked up the statistics on it, but right off hand, I don't know of another state that tries to get all its legislative business done in a half-year session.
Oklahoma's legislature gathers just six months out of the year. This means that all the necessary budget and financial issues must be taken care of and whatever time is leftover is allotted to new proposals. This seems inefficient to me and means some legislation never gets to the table.
Politicians' pet projects and causes come first after the necessary stuff. Despite what the polls show are the top concerns of the Oklahoma citizenry, legislators have found it important to deal with other issues, such as immigration. The output of new bills/laws would leave the rest of the nation believing that all of Oklahoma has its collective panties in a bunch over immigration or Shariah law, but that is not the case.
Perhaps in earlier times a part-time legislature was able to address all of the state's concerns, but in these times, I don't believe that is so.