message: optimize autoblur, fix issue
diff: @@ -259,7 +259,7 @@ export function initMixin(BScroll) {
  }
  BScroll.prototype._handleAutoBlur = function () {
  - this.on('beforeScrollStart', () => {
  + this.on('scrollStart', () => {
  let activeElement = document.activeElement
  if (activeElement && (activeElement.tagName === 'INPUT' || activeElement.tagName === 'TEXTAREA')) {
  activeElement.blur()
  