FF 57.0.2 window.prompt() not working
On new version 57.0.2, the window.prompt command does not return the value entered. You can test the function on the w3schools site:
https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_prompt
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Never mind... found that an add-on is causing the issue. Please close the question
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Never mind... found that an add-on is causing the issue. Please close the question