append() to head not working in 1.5

append() to head not working in 1.5

I am not able to re-open a ticket, and I can't find the contact information of somebody to do it for me.
I'd like to re-open  Ticket #7522, since I am again able to reproduce it in 1.5.1. Is there an easy way to do this?

edit: I changed the title, since the content of the topic is going in the direction of tickets #7522, #5819, #8607 and #8574.