Hey everyone!
Our team is aware of a critical issue impacting existing overrides on Skeletal Mesh Assets when updating a project from 5.5.X to 5.5.2.
Background:
If an Actor within the Level Viewport has a Blueprint-added Skeletal Mesh Component where the Skeletal Mesh Asset has been overridden, the overridden value will be lost after the update. It will appear simply that the mesh on the Actor has changed after the update. This does not affect Actors that have natively added Skeletal Mesh Components, i.e. C++ classes like Character are not affected.
If a project has already been updated, the overridden values cannot be recovered. The overrides will either need to be set manually or fixed via a script or Blueprint Editor Utility.
Next steps:
To quickly address this critical issue, we are backing out code that fixed an issue causing Skeletal Meshes to not update on Blueprint construction. If you’re planning to update your project, we recommend holding off until the 5.5.3 Hotfix. This does not impact new projects created in 5.5.2.
ETA on the Hotfix:
Look for that update in a Hotfix in the coming days—apologies for any disruptions in the meantime.