Unexpected double clicks are often caused by contact bounce, wear, contamination or firmware debounce settings.
Mechanical causes
A worn microswitch can close, open and close again within a few milliseconds. Software may receive that as two presses.
Software causes
Macros, accessibility tools and vendor utilities can also duplicate input. Test with a clean profile before assuming hardware failure.
Practical next steps
Back up settings, disable macros, test another port and device, then decide whether cleaning, warranty service or switch replacement is appropriate.
Sources and editorial notes
Published: 2026-07-11 · Updated: 2026-07-11