I just swiped right on my iPhone and got the hamburger menu instead of the previous page. It took a little figuring out under which conditions this happened, but I can reproduce as follows:
- Tap and hold on the far left of the screen.
- Move SLOWLY to the right. The slide menu will appear.
- If you move too fast, the menu will close again.
- Move slowly to the top and to the right, this will draw out the slide menu.
It take a bit of fiddling and it’s tricky to get right. I don’t think it’s a big issue, but it took me by surprise when it happened.