[Gallery picker] Field with Link Picker does not open picker on select in Firefox

Reproduced on Firefox 38.0
Steps to reproduce)
1) Open CMS and go to the content perspective
2) Open a document with image link. For example: /content/documents/demosite/news/2009/01/launch-cms-7 (teststuite)
3) Edit the document
4) Click the 'Select' button for the hippogallerypicker:imagelink

Expected: Picker opens
Actual nothing happens. No js log or server log.
Works as expected in Chrome