Until last week, when i logged in as administrator, on the page of nodes,
i could edit blocks by clicking "edit this block" link which appeared in upper right corner of blocks. But now i can't see edit block link, so for every time i want to edit block i go to "/admin/structure/block" which is very bad.
When i check the page source i can see the links like:
<div class="contextual-links-wrapper"> <ul class="contextual-links element-hidden"> <li class="block-configure first last"> <a href="/admin/structure/block/manage/block/32/configure? destination=admin/config/development/performance">Edit block</a></li> </ul></div>
What would be the problem.
How can i solve this?
Can you please help me.