Single touch stuck on trackpad, double tap works on my MacBook Pro

ngeorgep wrote:

Sometimes, the single touch on my trackpad gets stuck, making it feel like the system is hanging. However, the double tap works fine during this time. What could be causing this issue?

[Re-Titled By Moderator]

Make some change to your trackpad settings and compare your results, then come back to your preferred settings.

Change Trackpad settings on Mac

To trouble shoot further you can:

—A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

Does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, third party system modifications and system accelerations are disabled temporarily.

Login and test. Reboot as normal and test. Caches get rebuilt automatically.

This test will tell you if third party interference; most extensions etc are not loaded in safe boot mode.

—Test issue in another user (or guest user) account Change Users & Groups settings on Mac - Apple Support

This will tell you if it a universal issue or isolated to your user/admin account. 

***if you have a wireless keyboard with rechargeable batteries connect the charging cable before booting to Safe Mode. 

This will make it act as a wired keyboard and a successful Safe Boot mode.

unplug all non-essential peripherals when testing

Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus

all known to cause issues on the macOS