Why the quick-release button of the Xiaomi Smart Band 9 does not spring back correctly after the strap is assembled?

The strap of the Xiaomi Smart Band 9 supports quick release. The quick-release button is a movable element. To avoid the strap shaking after assembly, it has a slightly tight design. If the button does not spring back properly after assembly, you need to press the strap quickly and firmly when assembling to make sure the strap is assembled in place so that the button can spring back properly.