@Josue, Thank you very much! If the bug was my fault – please let me know what was wrong – I dont want it to happen again.
here you go,
thanks
got blank page on admin now
here you go
after clicking deafult editor button the page address changes from
…wp-admin/post.php?post=10&action=edit
to
…wp-admin/post.php?post=10&action=edit#
and nothing else happens