I bought an IdeaPad Z580 towards the end of last year and have had awful trouble with the gestures with the touchpad. Swiping from the left side of the trackpad to the right switches back to something you were doing before is my main issue as it crashes my games continually when I accidentally catch it.
I have been to control panel>mouse>settings>synaptics settings stuff and I can't find a 'turn off gestures' button.
Try to disable these settings:
1. Press WinKey+I > Change PC Settings > General > App Switching and turn off:
This will allow switching between recent apps; try swiping from the left edge - this should allow your screen to switch the most recently accessed app.