UI rendering problem with _blank target

I am using InAppBrowser to open a web page from an ionic 3 app. The page which I open has a alphascroll component which is similar to https://github.com/rossmartin/ionic2-alpha-scroll. If I open the page using the InAppBrowser browser target as _blank, when I scroll through the alphascroll to move up and down the lists in alphabetical order, there is a noticeable lag in updating the list and after few scrolls the list goes blank. If I use the targert option as _self or _system the scroll works perfectly. Does anybody know why these rendering issues are seen with the _blank target?

Start by reproducing the reported alphascroll behavior in an Ionic 3 app with InAppBrowser targets _blank, _self, and _system, using the linked ionic2-alpha-scroll component as context. Compare scrolling performance and the blank-list symptom across targets; done requires identifying the cause and establishing an agreed fix or explanation.

Written by the indexing model from the issue text.