open (originally powerpoint) presentation and play it. you should immediately notice an unpleasant manifestation of uncover up effect. animation should be a lot more smooth than now.
Thanks for bugreport Please, attach presentation with slide that has this problem
tested with latest version of libreoffice. i can no longer reproduce the problem. please mark this report as invalid. thank you.
Thanks for additional testing Due to last comment, changing status to WorksForMe