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1. Click on a link to show the context menu.
2. Right click on the description of the link in the context menu (eg. name of page the link points to).
3. Choose "Inspect element" which will defocus the page.
4. Click on the link again, thus putting the cursor back in the page; somewhere in the linked word.

After the context menu re-appears, a callback from AnnotagionInspector run via a OO.ui.Process throws:

Uncaught TypeError: Cannot read property 'isCollapsed' of null 
> ve.ui.AnnotationInspector.prototype.getSetupProcess = function () {
>   ..
>   .. fragment.getRange().isCollapsed()
 (anonymous function) ve.ui.AnnotationInspector.js:159
 (anonymous function) oojs-ui.js:3030
 (anonymous function)
 jQuery.extend.Deferred
 promise.then
 OO.ui.Process.execute oojs-ui.js:3067
 OO.ui.Window.setup oojs-ui.js:1902