Right click with two fingers won't work on MacBook
For a few months now, I've suddenly started having an issue where my MacBook's trackpad won't let me right click using two fingers. I've double checked System Preferences>Trackpad and made sure that "Secondary click with two fingers" is selected. I also double-checked my Expose settings to make sure there wasn't anything there set to secondary click that might impede the process, based on an older post I saw. I've also tried restarting my computer and also doing a pram reset, but neither of those have fixed my issue. Both left-clicking and scrolling are working just fine on my trackpad.
I know that I can use control + click to achieve this function, it's just much more convenient to be able to do the two-fingered click.
For context I'm using a 2017, 13-inch MacBook Pro running Sierra 10.12.6.
MacBook Pro 13", OS X 10.11