Gnome Touchscreen Left Edge Gesture
When trying to click buttons on the left edge of the screen it is not registered. The button will often be highlighted but not click. This functionality does not happen on other edges of the screen where gestures are not applied. It seems that the gesture grabs the event even when it is not carried out to completion and does not release the input back to the underlying window.
In general I wish that Gnome exposed any configuration options for touchscreen or touchpad gestures. The swipe from left gesture has the same functionality as the 3 finger pinch, and given this bug I would much prefer the option to simply disable this gesture.