I am blind and use a screen reader.
Version 4.7 implemented collapsible page sections.
This functionality is interesting but it provokes problems to who uses screen readers.
For example, in the advanced search, before entering in link "advanced search", the fields are occult. The problem is that at this moment, some screen readers yet do not support such functionality and show the occult fields but without they will be able to use them.
After entering in "advanced search"," everything functions well.
A possible solution would be a configuration that allowed to disactivate the collapsible page sections and presented the information of the traditional form.