Does anyone know if there's a fix for this or is there an alternative source for the Help such as a PDF?
I have High Sierra also. But I only have the full RM7 program.
You may have a mouse problem. My mouse points to one area and it click a tad bit lower. I have a Logitech mouse and it does this on lots of things, so may be something in High Sierra as I don't really remembering it doing this before (or else I just didn't notice).
In Help>the guide, when you have your cursor over the 'forward or back' buttons and it "sees" them, the square the green arrow is on will outline. That is how you can tell.
The reason I say that, is because when I put my cursor on 'Intro', it also opens the 'Interface' topic. BUT it does this on lots of other programs too. I do not think this applies to "the hand" icon, just the cursor icon.
Hope this helps.