Yes — this is a real iOS 27 Shortcuts bug, and other users have reported the same black/blank screen after updating. It isn’t specific to the iPhone 11 Pro.
Try this first
Force-restart your iPhone 11 Pro: press/release Volume Up, press/release Volume Down, then hold the Side button until the Apple logo appears.
Open Shortcuts again.
If it still shows black, check Settings → General → Software Update and install any newer iOS 27 update available.
Apple's standard guidance for an app that won't open is to force-close it, restart the iPhone, check for updates, and—if necessary—delete/reinstall the app. Be careful with deleting Shortcuts, because Apple warns that app data can be lost.
So: yes, you're not alone; this appears to be an iOS 27 Shortcuts issue, not necessarily a hardware problem with your 11 Pro.