When you double-clicked on a word in your writing in the Writing Aid tab, you may have been moved, in some browsers, to the Words tab.
Now, when you double-click on a word in your writing, you will see quotations with all the instances of usage for this word, if it is present in your selected literature; otherwise, you will be taken to the Words tab, where you can look-up whether the authors of your selection used closely related words or other forms of this word.
To make sure that you are using the updated version of Quotations, it may help to clear your browser data, by pressing Ctrl+Shift+Del (Firefox, Google, Microsoft). Apple or Unix users may have been unaffected.
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Update, March 5, 2021
Note that Ctrl+Shift+Del clears your browser data. See discussion of browser data clearing on our advice page for Your Literature Additions.