On user-specified redirect after article saving in frontend, the code uses JRoute constructor to build url, but doing so it uses a default parameter that erroneously leads to encoding all the url query part, so converting '&' to ' & amp;' (entity, without space).
That is not correct and may lead to components error or malfunction, particularly in the case of third party components, as they could not be able to get Itemid param and all the other query params.

The same problematic default parameter is used in case of cancel and of edit error (same class, cancel and edit function), that redirects to return page (via getReturnPage).

Summary of Changes

Add 'false' as second parameter in four JRoute constructors calls

Testing Instructions

Create a menuitem to show list of articles of 'uncategorized' type
Create a menuitem to Submit New Article and specify a redirect after submit to previous menuitem.
Submit a new article

Expected result

redirection to: index.php?option=com_content&view=category&id=mm&Itemid=nnn

Actual result

redirection to: index.php?option=com_content& amp;view=category& amp;id=mm& amp;Itemid=nnn (entities, without spaces)

Documentation Changes Required

none