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Fix: Added an OnTilePropertyChanged delegate to SPCGExCollectionGridTile that fires after tile-level property edits complete (weight slider end, weight text commit, and subcollection checkbox toggle). The grid view binds this delegate to call UpdateDetailForSelection(), which re-copies the entry data into the detail panel's struct, keeping it in sync immediately.
… seed - Material variant selection in PCGExAssetStaging and PCGExStagingSplineMesh always produced the same variant for a given entry because the material pick used the same Seed as the entry pick. Both create a FRandomStream(Seed) independently, and since the stream is deterministic, the first FRand() from each is identical — making variant selection perfectly correlated with entry selection. - Fixed by deriving a decorrelated seed for material variant picking: PCGHelpers::ComputeSeed(Seed, Staging.InternalIndex) mixes in the entry's internal index, breaking the correlation while remaining deterministic.
…o shared seed" This reverts commit 917b79b.
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Problem: When editing the weight via the tile's spinbox (either dragging the slider or typing a value and pressing Enter/clicking away), the bIsBatchOperation flag suppresses OnObjectModified, so the detail panel's FStructOnScope copy is never refreshed. The details only update when navigating to a different record (which calls UpdateDetailForSelection()).
Fix: Added an OnTilePropertyChanged delegate to SPCGExCollectionGridTile that fires after tile-level property edits complete (weight slider end, weight text commit, and subcollection checkbox toggle). The grid view binds this delegate to call UpdateDetailForSelection(), which re-copies the entry data into the detail panel's struct, keeping it in sync immediately.