Very nice work about this neat plugin.
I think I've found a bug. I'm a frontend developer and showing a test based on your plugin to the marketing team, they told me that they didn't have the same render. They were telling me that the book is moving from right to left at each page, that was strange. Then I thought "Are they on mobile ?.." but no. So I search.
I fact they are on Apple products (Mac Book, Mac Pro etc) and their screens are Retina displays, so their density of pixel are greater than 1, and if you remember how you handle the cmdSinglePage, you'll understand the problem :
singlePage: _this.actions['cmdSinglePage'].active || _this.actions['cmdSinglePage'].activeForMobile && _this.devicePixelRatio > 1,
Then, even if I filled the option correctly :
Single page mode is activated on "desktop" devices with high density screens.
You can easily reproduce this on Firefox, F12, enabled Responsive tab and change DPR next to sizes.
Hope it'll help.