As a first time user of Bookwright, I too had the problem of an orange text container rim sometimes remaining (instead of the blue container rim) once I had entered the text (though it didn't appear in Preview). The only way I was able to solve this was to delete the text and the container and start again. (I also left a couple of spaces in the container before starting to retype the text, don't know if that solved the problem). Anyway, the second or third time I re-entered the text, the orange container no longer appeared, in every case, and there were several. Luckily I had short texts!