When I open a document, a blue bar with a "Read Only" message is displayed near the top and the only way to close it is to click "Enable Editing". Older versions allowed the bar to be closed by clicking the "i" icon on the left (what an idiot had such stupid idea???).

BTW, what editing??? Which part of the word "Reader" don't you understand? Adobe Reader is a tool for viewing documents, not editing them!!!