Drop down flickers in iPAD

Dropdown list in my Ionic application flickers in iPAD.

[On Dropdown Tap]

[If Tap on outside dropdown list]
OnOuterClick

This issue occurs in iPAD, but works fine in my iPhone 5s.

Any solution or workaround?

EDIT:

Even if I change the orientation of iPAD, it shows the previously listed dropdown contents.

Seems to be an issue with recent update of iOS 11 and Apple’s UIWebView. It works well with Apple’s WKWebView.

Resolved the issue by installing cordova’s WKWebView.

>> cordova plugin add cordova-plugin-wkwebview-engine --save

Then adding the following in config.xml:

<feature name="CDVWKWebViewEngine">
  <param name="ios-package" value="CDVWKWebViewEngine" />
</feature>

<preference name="CordovaWebViewEngine" value="CDVWKWebViewEngine" />

Stackoverflow link