New page inserts incorrectly in document on iMac
iMac Tahoe 26.6.2
Hello! Please can you help me! I have a WP document with 9 pages. I want to add a tenth. I select page 9 in the thumbnail view and press the + on the tool bar at the top. The new page appears between page 8 and what was page 9! I've tried this several times and I just cannot get a fresh page at the end. If it helps - I used another project as the starter layout for this one. The other project had nine pages . . . surely that shouldn't make a difference? Please help as this is A LOT of work and I'm going mad!
iMac 24″, macOS 26.6