Why isn’t this feature working?
It’s very bad if you forget to save your changes and don’t figure out why your test isn’t working correctly.
It’s a known problem:
Thanks @kazurayam for the swift reply.
I will be tagging our Studio team members here (@xuan.tran and @Shin) to see if they know anything about when we will get AutoSave up and running since the other topic was a long time ago.
Thanks 
I hope this feature will soon fix in a update.
Thanks @phuonghd and @kazurayam for bringing up this issue. We have not officially supported auto-save yet. We’re still investigating this and hopefully to ship it in future releases.