I haven’t tried either of those. I tend to stay away from IE as much as possible, but I’ll give it try and see what happens. I’ll also create a new user and try that as well. Thanks.
Would that be the “Distraction Free Writing” feature located at the top right corner of the editor? If so, I tried that and the width is about 498px.
To remove the date you can add this to your new child theme style.css file:
.entry-date {
display: none;
}
You should be able to make a similar addition for the other options you listed.