I have a weird problem. When I use the Text Editor widget in Posts, the font size slider in Typography works perfectly. irrespective of what text type (paragraph, heading, preformatted text etc.) is set. However, on my Pages (all of them!) the resizing slider has stopped working (i.e. it DID work previously). It will only work for the category 'Preformatted text'. This loss of function DID NOT coincide with any new plugin being added. It seems really strange that the functionality is different in Posts and Pages, which suggests it is something more subtle than a plugin conflict. Can anyone suggest a fix for this as it is really affecting my ability to style the site? Thank you.