Libre Office Impress slides problem

edit

Hi, I've been using Libre Office Impress for my slideshows, and it started making problems during the past months. When I try to start the slideshow from the first slide, it skips the first two slides and starts from the third. And then if I keep going forward, it skips many other slides as well. Each time I try to create a new slideshow, it starts out fine, and then at point starts skipping slides. I can't use the "Start from current slide" either. It's always the same. I have the last version of Libre Office, so I'm not sure what the problem is.

Thank you