[Sidebar] View Source button error

[mdhtr]

Clicking the View Source button on the Sidebar/Definition page throws Uncaught TypeError: Cannot read property 'split' of undefined.

Uncaught TypeError: Cannot read property 'split' of undefined
    at Object.getIndent (docs.js:643)
    at Object.formatCode (docs.js:1011)
    at r.fn.init.initializeCode (docs.js:1081)
    at e (jquery.min.js:2)
    at HTMLElement.createCode (docs.js:805)
    at HTMLElement.dispatch (jquery.min.js:3)
    at HTMLElement.q.handle (jquery.min.js:3)
getIndent @ docs.js:643
formatCode @ docs.js:1011
initializeCode @ docs.js:1081
e @ jquery.min.js:2
createCode @ docs.js:805
dispatch @ jquery.min.js:3
q.handle @ jquery.min.js:3
2017-04-27 16:42:58.196 

What would be the desired usage of the View Source button here? The code is already shown. Should the View Source button be removed or should it be fixed?