I just opened a legacy project in AC25 to test this... and my wrapped schedule strangely showed up on the layout as unwrapped. But, the wrapping option did show up in the pet palette and worked fine to wrap it back to how it was supposed to be. Are you clicking on the bottom right hotspot?
One of the forum moderators • AC 26 USA and earlier • macOS Ventura 13.2, iMac Pro 10-Core, Radeon Pro Vega 64
What version of Archicad 25 are you working on? Is it the official version (from Graphisoft official website) or perhaps a version downloaded from an external / 3rd party website?
While helping local clients with "Archicad issues", I came across several that had the same & very similar issues like you mention here. They all turned out to have used an installation file from a 3rd party website.