端上复现步骤:

ios18 微信端 bug: 调用分享图片 => 选择好友 => 点击取消 => (此时再选别的好友选中不了)

ios17、安卓符合发送预期

wx.downloadFile({
  url: 'https://res.wx.qq.com/wxdoc/dist/assets/img/demo.ef5c5bef.jpg',
  success: (res) => {
    wx.showShareImageMenu({
      path: res.tempFilePath
    })
  }
})