Closed software doesn't have open bug trackers, so there's no systematic way to find out. An acquaintance of mine were twice hit with a bug that corrupted Word

Closed software doesn't have open bug trackers, so there's no systematic way to find out. An acquaintance of mine were twice hit with a bug that corrupted Word documents stored on iCloud if editing on her iPad. Searching online yielded others with the same problem from more than one year ago...