Hello all! We made a minor change to the existing Beta Feature to further simplify things.
Before, as mentioned in the post, when Join Surfaces was on, all flat touching sides would create a ManualWeld instance, and a special name was generated using the names of the two connecting parts.
Now, we just create a Weld instance and give it no special name. There is currently no difference between the two, and creating special names was inconsistent with how everything else is created in Studio (using identical names also creates a small network performance improvement).
This change should have already been applied to the Beta Feature, so this will already be happening if you have the feature enabled.