Looks like Jay Freeman “Saurik” likes to push updates out at night. Over night we got a update for Winterboard to version 0.9.3918. Adding a few features like fixing iCloud backup bug, skipping corrupt PNG files. Prioritizing loading of @3x files. And avoiding bad info.plist files.
I know as a themer that most of these features are a big improvement and will surely help in Winterboard stability.
So get to Cydia and update Winterboard now.