I don’t know what happened. The trackpad button now sticks. Was fine, then a long trip and suddenly it breaks. Anyway the trackpad button is like a teeter totter. You can press the left side it does a click, but the button doesn’t come up. If you press the right side, it drops on that side.
Feels like a mechanical issue where the spring isn’t quite right. No google posts I can find of someone with this kind of defect. Off to Apple Store I go.