Browser spell checker not working in Plone 5

Hi there

I have installed Plone 5 on Ubuntu server and connecting via Windows. I have the TinyMCE editor enabled and set to Browser default Spell checker - I have checked the browsers (Firefox, Chrome and IE11) and all are enabled for spell check as I type. But it does not seem to work on the Plone site. Any reason?

I have tested the AtD spell checker and that shows in the editor toolbar and clicking the button checks the spelling (on demand so to speak) but I would love to have spell as I type.

Thanks

May you please file a bug report at our issue tracker https://github.com/plone/Products.CMFPlone/issues ?

PR submitted to fix: https://github.com/plone/Products.CMFPlone/pull/1414/files#diff-7383286ec56ace5407282056a2b6067cR111