Thanks to @ra-mac for pointing out that auto-activation left no way for the source to be shown on a markdown cell once it was run.
As of RCloud 2.1, the edit button had two functions: it would activate edit mode, and, if the cell was markdown, it would also show the source if it was hidden.
The source of a markdown cell gets hidden when the cell runs.
With autoactivation, we remove the first function. To make it consistent with the show/hide results button, it will now hide as well as show the results, and the edit button will only be shown for markdown cells.
gordonwoodhull
commented
4 years ago 
Thanks to @ra-mac for pointing out that auto-activation left no way for the source to be shown on a markdown cell once it was run.
As of RCloud 2.1, the edit button had two functions: it would activate edit mode, and, if the cell was markdown, it would also show the source if it was hidden.
The source of a markdown cell gets hidden when the cell runs.
With autoactivation, we remove the first function. To make it consistent with the show/hide results button, it will now hide as well as show the results, and the edit button will only be shown for markdown cells.