The post disappears

HI, I am new to your plugin, so I might do something wrong.

If I do not write anything in the post itself, the whole content disappears when saving the draft. I need to write at lest a letter in the blog post title. I would rather not have anything in the title, as the review has it’s own title (if this is not possible, there should maybe be some kind of warning – I wrote a long review and it disappears, not even an earlier version was saved.

Best regards,
Knut