amresh18 wrote:
Thank you for your response. My Mac is a MacBook Pro 13-inch M2 (Apple Silicon). As far as I know, NVRAM reset using Option + Command + P + R is only available on Intel Macs. Could you please clarify whether your advice has been tested specifically on Apple Silicon Macs? Also, do you have any Apple documentation or evidence confirming that macOS 26.5.2 introduced this trackpad calibration issue?
Firstly, you are very correct in your statement 👍 “ As far as I know, NVRAM reset using Option + Command + P + R is only available on Intel Macs “
Good Catch and bravo on that 👍
Based on the symptoms you described, the problem could be caused by either software or hardware, although the available evidence points more toward a hardware issue.
The timing makes it understandable to suspect macOS 26.5.2 because the problem appeared immediately after the update.
However, the fact that reinstalling macOS temporarily resolved the issue before it returned suggests that the update itself may not be the root cause.
If the issue were caused solely by a software bug, a clean installation would typically continue to behave the same way unless another software update changed the behaviour.
Since an external mouse works normally and the issue affects only the built-in trackpad, the problem appears to be isolated to the trackpad hardware or the components that control it.
On modern MacBook Pro models, the trackpad does not physically click.
Instead, it detects pressure electronically and the Taptic Engine generates the sensation of a click.
If the pressure sensor or a related component begins reporting false input, the Mac can register a click and produce haptic feedback even when a finger is only resting lightly on the trackpad.
It is still worth testing the Mac in Safe Mode and with a newly created user account to rule out software conflicts or user-specific settings.
Running Apple Diagnostics may also be helpful, although it does not always detect trackpad-related hardware faults. If the same behaviour occurs regardless of the software environment, that would further support the possibility of a hardware issue.
There have been occasional reports over the years of unusual trackpad behaviour following macOS updates, but there is currently no well-established evidence that macOS 26.5.2 introduced a widespread issue that causes built-in trackpads to register clicks automatically.
Some users have seen similar problems resolved by later macOS updates, while others ultimately required replacement of the trackpad or another related hardware component.
Considering that the issue is limited to the built-in trackpad, that a macOS reinstallation only provided temporary relief, and that the Mac produces haptic feedback while registering unintended clicks, the most likely explanation is a developing hardware fault involving the trackpad, its pressure-sensing system, the Taptic Engine, or the associated control circuitry.
Although the issue first appeared after the macOS update, there is not enough evidence at this time to conclude that macOS 26.5.2 is the direct cause.
