Steps to reproduce:
1. Open the “user’s attached project”
2. Open “SampleScene”
3. Enter Play Mode
4. Select the “AtlasTestSprite” Sprite through the Project window
5. Change the “Pixels Per Unit” value through the Inspector
6. Observe the crash

Reproducible with versions: 6000.0.62f1, 6000.2.3f1, 6000.2.12f1
Not reproducible with versions: 6000.2.2f1, 6000.3.0b10, 6000.4.0a4, 6000.5.0a1

Reproducible on: macOS 15.7.1 (M1 Max)
Not reproducible on: no other environment tested

First few lines of StackTrace:
#0 0x00000106271e0c in SpriteAtlas::PopulatePackedTexturesAndRenderData(core::vector<PPtr<Texture2D>, core::allocator<PPtr<Texture2D>, 0ul>> const&, core::vector<PPtr<Texture2D>, core::allocator<PPtr<Texture2D>, 0ul>> const&, BuildTargetPlatform, core::hash_map<std::{}{{}}1::pair<UnityGUID, long long>, SpriteRenderData, SpriteRenderDataKeyHash, std::{}{{}}1::equal_to<std::\{_}_1::pair<UnityGUID, long long>>>&)
#1 0x0000010626f608 in SpriteAtlasImporter::PackSpriteAtlas(SpriteAtlas, AssetImportContext&, AssetImporter, PPtr<Object>)
#2 0x00000106275efc in SpriteAtlasImporter::GenerateAssetData(AssetImportContext&)
#3 0x00000106acf7d0 in ImportToObjects(core::basic_string<char, core::StringStorageDefault<char>> const&, core::hash_map<AssetDatabase::ImporterID, ImporterInfo, core::hash<AssetDatabase::ImporterID>, std::__1::equal_to<AssetDatabase::ImporterID>> const&, core::vector<PostprocessorInfo, core::allocator<PostprocessorInfo, 0ul>> const&, TransientArtifactProvider const&, AssetResolveTracker const&, ImportAssetInputs const&, ImportAssetOutputs&, IImportProgress)
#4 0x00000106ace678 in ImportAsset(core::hash_map<AssetDatabase::ImporterID, ImporterInfo, core::hash<AssetDatabase::ImporterID>, std::__1::equal_to<AssetDatabase::ImporterID>> const&, core::vector<PostprocessorInfo, core::allocator<PostprocessorInfo, 0ul>> const&, TransientArtifactProvider const&, AssetResolveTracker const&, ImportAssetInputs const&, ImportAssetOutputs&, IImportProgress)