Text not selectable

[chadallard]

Switching from react-json-view, one thing I noticed immediately is that I could no longer select text in the JSON viewer.
It seems there are now CSS properties that block this:

-webkit-user-select:none;
user-select:none;

These appear to be inherited from MuiPaper-root class.

Workaround I have found in the meantime is to manually override the style, which shouldn't be required:

.MuiPaper-root{
-webkit-user-select:text !important;
user-select:text !important;
}

Perhaps userSelect:"text" should be added as Mui theme override.