Gravit 3.25 on arch Linux and Gravit Cloud
Chromium Version 62.0.3202.94 (Developer Build) (64-bit)
I have 10 pages that display properly in single page mode. Below is a screenshot of the multi-page mode grid. You can see that one of the spots in the grid remains empty. What you can’t see is that the bottom right page actually contains two stacked pages. So all of the pages exist, but are not all discretely defined in the multi-page grid.