When loading a url in the InAppBrowser, there is a 44 px gray status bar for iPhone X. This appears to be larger due to "the notch" on this device.
However, when you switch to landscape mode, the 44px gray status bar stays on the top, which is a mistake because the notch is now on the side.
I am using the "viewport-fit=cover" meta viewport tag, as well as the iPhone X compatible splash screens, as is recommended here: https://blog.phonegap.com/displaying-a-phonegap-app-correctly-on-the-iphone-x-c4a85664c493.
I have attached screenshots of the problematic behavior in iPhone X, as well as the desired behavior in iPhone 8 Plus.