Cannot hide the right side bar while using the editor

Hello,

I have just discovered Publii. It is a marvelous program.

Unfortunately I am experiencing a strange behaviour while I type a post. The right panel with “save and close”, “Back to post” is openend and cover the right part of the editor. This prevent me to see the whole editing area and even to reach the right part.

How to hide that annoying panel? I cannot see a button or some resizing tool. Any action I perform is unable to close it.

I’m using the windows 10 version.

Thank you,

Luigi