MacBook Pro 14-inch trackpad cursor freezes after keyboard input

By far the easiest way to cause poor performance, instability, overheating and crashing is to install ANY third-party speeder-uppers, Cleaners, Optimizers, Third-party Virus scanners, Bit Torrent, or a VPN that you installed yourself.

 You should remove any and all (other than Apple built-in) virus scanners, speeder uppers, optimizers, cleaners, App deleters or VPN packages you installed yourself, or anything of that ilk.

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Safe Mode does a number of different things.

On older Intel Macs, hold shift at startup, but have your userid and password at the ready.

On newer Apple silicon Macs, shut down your Mac. Then as you start up again, hold the power key until the ’Startup Options’ screen appears.

A parade of unusual things happens.

• Your Mac loads just enough of the kernel to do a disk check. Then it proceeds to do a disk check and if needed, make Repairs. This can take an extra about five minutes.

• your userid and password are required, even if you normally auto-login. So have them handy.

• Your Mac adds ONLY a minimal set of Apple-Only extensions, Not including graphics acceleration extensions. Screen updates will therefore be wonky and slow, but it ultimately should be correct.

• Your Mac assumes defaults for as many settings as possible, including screen resolution.

PUNCHLINE:

"Works in Safe mode, fails in regular mode" implies "It's something you added".

How to use Safe Mode on your Mac

Start up your Mac in safe mode - Apple Support

"MacBook Pro 14-inch trackpad cursor freezes after keyboard input:"

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A few Questions and Thoughts for Starters:

A. Explain the Goal of this:

"This happens when holding down the key and also right after moving the trackpad directly after any key press."

This doesn't seem like something that one would be required to perform for use of the macOS. What are you trying to achieve undoing so. I can see an app (such as for gaming) having a need for this, but not macOS features. Trying it myself, I do not have any issues.

B. Speaking with Apple Over-the-Phone:

"[...]Talked to numerous apple specialists on chat, on the phone for at least 3-4 hours, and they made me tick untick all sorts of settings, reinstall OS literally everything. No one could help."

What you should do when speaking with Apple is toggle on speakerphone, open the Camera app, and then hover the iPhone's iSight Camera over your Mac. Doing so, the Apple Rep can see this firsthand, from YOUR perspective. See my User Tip: Screensharing your iPhone to Converse with Apple Support: - User Tip

C. Internal Keyboard Issue:

"[...]Tested with a bluetooth mouse and the issue is gone."

Turning Off Bluetooth: What happens when you turn off bluetooth? What Happens when you plug in an external keyboard? Do you still get this issue, either way? If so, then it seems like a hardware issue, having singled-out this internal keyboard (Wireless and Hardwired)

D. Remove Profiles:

"went to the apple store twice, had my laptop opened and inspected and all diagnostic tests passed with flying colors. Issue still persists."

Profiles an be created so that Apps operate in a. certain manor, and to limit access and operability. See here: Review and Delete Configuration Profiles - Apple Support

"I've sent them multiple videos and they confirmed they received them and looked at them. They have the footage, and anyways i asked them multiple times if they want to see it live through camera app / facetime, they declined on all occasions."

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Some Other Thoughts:

A. Apple Not Screensharing your iPhone:

Apple's always been willing to work with me in that manner. It's probably got to do with Terms & Conditions. I remember way back in 2017 when my MBP's screen would flicker, and I perform all of that screensharing. I authored that User Tip way-back-when, and added my avatar recently, and now the much more-recent date. I even troubleshoot using that method nowadays with them, when questioning other issues like scams. It's gone viral ever since.

B. Bluetooth Working:

So, what about a hardwired keyboard and mouse? Have you tried those? To do so, you may need to purchase an adapter; and you can use it for future use, such as when it is in clamshell mode, or Bluetooth is not working, for future use: About the Apple USB-C to USB Adapter - Apple Support

C. Single-Out this User:

What happens when you create a new Administrator user, and attempt it through that user? Do you get the same issue? If so, it is an issue with the current user. If not, then is is an issue within the entire macOS.

D. Reinstall the macOS:

Keyboard software is based on drivers, and add-ons. So, one option would be to reinstall the macOS to fix any bugs in this device's configuration. Nothing would be lost; it's just that misplaced items would be placed back to where they should be and corrupt system files would be replaced by clean files. Go Here: Reinstall macOS - Apple Support. Important: Prior to installing an update or performing a reinstallation, to prevent data loss, be sure to Back up your Mac with Time Machine.

E. Clearing System Data:

You can clear System Data(formality called "Other" in older macOS versions) in-full on a Mac, using my User Tip: How to Use Finder to Clear “System Data" on a Mac - User Tip. Caches are created so that an app opens quicker and faster through remembrance of usage over-the-years.

F. Keep Security Software Off of your Mac.

It just gets in the way, and is sometimes un-installable. If you need to update sometimes, then its Firewall Settings may just get in the way.

But...

Scan with Malwarebytes for Mac:

Start with running a scan for malware, using Malwarebytes for Mac and remove what is found. Perhaps something was installed that made this occur. Remove what is found from the quarantine. Malware is short for: Malicious Software, which makes your computer act in a mislead manor. Download: Malwarebytes Anti-Malware for Mac

Since my last post, I've opened a feedback assistant bug report but have yet to hear back about it.

Also, Ive noticed the issue disappears if i use my index finger to control the mouse, but If i use my thumb it happens

“Why do i need to use a seperate keyboard / mouse when theres supposed to be a working keyboard and trackpad INCLUDED in my laptop. i paid over 5 grand for this laptop at the very least it should work properly.”

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What Use an External Keyboard and Mouse:

To make use of what you have and while you have time to use it. These are just user-to-user forums. No one here has any say in returns, but, I would recommend doing so. You might want to purchase AppleCare+(and it seems you may have, having mentioned about all of the troubleshooting you’ve done with Apple Support.

A) Its clearly something that is in the new devices that shouldnt be there. I should not have my trackpad not respond to my finger input as im typing something / right after i type something. it just wastes extra time and its not supposed to be that way. it is not like that on my old m1 mbp

B) I've sent them multiple videos and they confirmed they received them and looked at them. They have the footage, and anyways i asked them multiple times if they want to see it live through camera app / facetime, they declined on all occasions.

C) Just tested, and the issue is gone if i use a bluetooth mouse, bluetooth keyboard, or both. Must be hardware related then. Turning off bluetooth the issue still remains.

D) They did do all that stuff and even did safe booting and whatever. they threw Everything they had at it

A) they just wouldnt accept any sort of live sharing of footage but happily accepted the recorded footage which i sent them and they said they analyzed with their internal team. i live in Singapore, perhaps theres some region specific privacy laws or protections idk.

B) Why do i need to use a seperate keyboard / mouse when theres supposed to be a working keyboard and trackpad INCLUDED in my laptop. i paid over 5 grand for this laptop at the very least it should work properly.

C. D. E. F. All have been completed already with the assistance of support team to no avail. And also i literally bought TWO brand new mac book pros at the store, unboxed it right at the store (yesterday) in front of all the genius bar people and the issue was right there!! the Apple staff at the store saw and acknowledged the issue couldnt find the reason and just told me to get a refund and to get a new laptop (i did that 2 times already......). so i dont think they could help me.

Hello Ive done that already with the apple specialists and it is still not fixed. Also i bought and unboxed 2 brand new macbook pros at the store, fresh out the box, and they still have the same issue. didnt even install anything on those two