通过canvas生成的图片在iphone12上不显示（部分12手机，目前发现ios15.1.1）,具体参数

benchmarkLevel: -1

language: zh_CN

wifiEnabled: true

safeArea: [object Object]

bluetoothAuthorized: true

bluetoothEnabled: true

fontSizeScaleFactor: 1

deviceOrientation: portrait

phoneCalendarAuthorized: false

notificationSoundAuthorized: true

locationAuthorized: true

screenHeight: 844

system: iOS 15.1.1

version: 8.0.18

windowHeight: 844

fontSizeSetting: 17

statusBarHeight: 47

locationReducedAccuracy: false

pixelRatio: 3

windowWidth: 390

notificationBadgeAuthorized: true

notificationAuthorized: true

model: iPhone 12<iPhone13,2>

batteryLevel: 60.000003814697266

locationEnabled: true

screenWidth: 390

screenTop: 0

microphoneAuthorized: true

albumAuthorized: true

cameraAuthorized: true

notificationAlertAuthorized: true

brand: iPhone

platform: ios

SDKVersion: 2.22.0

enableDebug: false

devicePixelRatio: 3

host: [object Object]

mode: default