Impress Loop and Repeat option isn't saved

I’m using LO 25.8 on Fedora Workstation 43. The option to Loop and Repeat a slide show works until I close and reopen the presentation. After reopening it, the option is not set.

How can I get this to persist?

TIA

I have the same problem. It doesn’t seem to matter whether the presentation is saved as an .odp or as a .pptx.

https://bugs.documentfoundation.org/show_bug.cgi?id=169875

Thanks @fpy, that explains it.