Swipe between pages doesn't work and unable two fingers scrolling up/down

Since this morning, the "swipe between pages" functionality doesn't work anymore on my computer!

Web-browser specific description of the problem

Google Chrome

When I try to swipe between pages on Google Chrome, it just does not work. The window get shifted within its frame and come back to its original position.

Safari

When I try to swipe between pages on Safari, the window slightly shifts within its frame and get stuck into this position. Further two-finger movements (including scrolling up and down) are then not functioning. When I open a new window, the scrolling up/down is working again.

Firefox

When I try to swipe between pages on Firefox, nothing happen and further two-finger movements (including scrolling up and down) are then not functioning. When I open a new window, the scrolling up/down is working again.

How I tried to solve this issue

I opened system preferences to make sure that in the section trackpad, the option swipe between pages is activated. Yes, it is activated!

For some reason, I checked the always box next to Show scroll bars in the general section in the system preferences.

In Bash, I wrote the following command line: defaults write -g com.apple.trackpad.scrollBehavior 2 but nothing happens!

What worked as well for me was switching off two finger swipe from the trackpad settings ('Swipe between pages' setting), then turning it on again directly after. A lot more convenient than logging out and in again.

If the problem happens too often a PRAM reset often helps as well:

1. Shut down your Mac.
2. Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys before the gray screen appears. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
5. Release the keys.