Virtual Scrolling Rendering does not work after using Keyboard or Camera

Hey, I have a Page with a Virtual Scrolling List - Usually it is working good!

As you can see in this Picture, all fine and good. I can do stuff, navigate and so on and everything works fine.

BUT IF I go on and Use Native Elements like Camera or the Keyboard, the Virtual Scroll List is not displayed anymore or looks like this. Without doing anything just the Keyboard beeing opened on the same NavCtrl.
(Have tried with a Modal-Page and it wont trigger the Problem)

Does anyone have experience on this??

My Ionic Info:

ionic info

cli packages: (C:\Users\Marco\Projects\book-circle-ui\node_modules)

@ionic/cli-utils  : 1.18.0
ionic (Ionic CLI) : 3.18.0

global packages:

cordova (Cordova CLI) : 7.0.1

local packages:

@ionic/app-scripts : 2.1.4
Cordova Platforms  : android 6.0.0 browser 4.1.0
Ionic Framework    : ionic-angular 3.4.2

System:

Android SDK Tools : 26.1.1
Node              : v6.11.3
npm               : 3.10.10
OS                : Windows 10

Package.json:

“dependencies”: {
@angular/common”: “4.1.3”,
@angular/compiler”: “4.1.3”,
@angular/compiler-cli”: “4.1.3”,
@angular/core”: “4.1.3”,
@angular/forms”: “4.1.3”,
@angular/http”: “4.1.3”,
@angular/platform-browser”: “4.1.3”,
@angular/platform-browser-dynamic”: “4.1.3”,
@ionic-native/barcode-scanner”: “4.3.1”,
@ionic-native/camera”: “^4.2.1”,
@ionic-native/core”: “3.12.1”,
@ionic-native/date-picker”: “^4.3.1”,
@ionic-native/google-plus”: “^4.3.0”,
@ionic-native/splash-screen”: “3.12.1”,
@ionic-native/status-bar”: “3.12.1”,
@ionic-native/keyboard”: “4.3.2”,
@ionic/storage”: “2.0.1”,
“angularfire2”: “^5.0.0-rc.3”,
“cordova-android”: “^6.0.0”,
“cordova-browser”: “^4.1.0”,
“cordova-plugin-camera”: “^2.4.1”,
“cordova-plugin-compat”: “^1.1.0”,
“cordova-plugin-console”: “^1.0.5”,
“cordova-plugin-datepicker”: “^0.9.3”,
“cordova-plugin-device”: “^1.1.4”,
“cordova-plugin-googleplus”: “^5.1.1”,
“cordova-plugin-splashscreen”: “^4.0.3”,
“cordova-plugin-statusbar”: “^2.2.2”,
“cordova-plugin-whitelist”: “git+https://github.com/apache/cordova-plugin-whitelist.git”,
“firebase”: “^4.6.0”,
“ionic-angular”: “3.4.2”,
“ionic-plugin-deeplinks”: “^1.0.14”,
“ionic-plugin-keyboard”: “^2.2.1”,
“ionicons”: “3.0.0”,
@ionic-native/fcm”: “4.3.2”,
“ionic-img-viewer”: “2.7.3”,
“ng-elastic”: “^1.0.0-beta.5”,
“phonegap-plugin-barcodescanner”: “^6.0.0”,
“dexie”: “2.0.1”,
“rxjs”: “5.4.0”,
“sw-toolbox”: “3.6.0”,
“cordova-plugin-fcm”: “^2.1.2”,
“zone.js”: “0.8.18”
},
“devDependencies”: {
@angular/cli”: “^1.1.2”,
@ionic/app-scripts”: “2.1.4”,
@types/jasmine”: “^2.6.3”,
@types/node”: “^8.0.51”,
“codecov”: “2.3.0”,
“connect”: “3.6.3”,
“ionic-mocks”: “0.13.0”,
“jasmine-core”: “2.6.2”,
“jasmine-reporters”: “2.2.1”,
“karma”: “1.7.0”,
“karma-chrome-launcher”: “2.1.1”,
“karma-cli”: “1.0.1”,
“karma-coverage-istanbul-reporter”: “1.2.1”,
“karma-jasmine”: “1.1.0”,
“karma-jasmine-html-reporter”: “0.2.2”,
“karma-junit-reporter”: “1.2.0”,
“protractor”: “5.1.2”,
“serve-static”: “1.12.4”,
“ts-node”: “3.3.0”,
“tslint”: “5.6.0”,
“tslint-eslint-rules”: “4.1.1”,
“typescript”: “2.3.4”
},

Thanks for your help!!