6000.4.5f1

Supported · Released Apr 28, 2026 · Changeset cc83ebd631f8 · 10 release notes

Unity release page Release notes (markdown) Open in Unity Hub

55build score

Upgrade risk+26Net cleanup+15Live debt+14

cohort: Update/Supported (41)

How this number is computed

Composite = sum of sub_score × weight across six metrics. Sub-scores are percentile-rank(log1p(min(raw, p95))) within the Update/Supported cohort (41 releases). Sub-scores for lower-is-better metrics are flipped to 100 − percentile.

Sub-score	Formula	Raw	Clip	%ile	Weight	Score	Contrib
Breaking surface	(breaking_change + api_change) / total_notes	0.016	0.016	67	25%	33	8.2
Blocker rate	blockers / total_notes	0.079	0.079	40	15%	60	9.0
Mobile risk	mobile_known_issues / total_notes	0	0	15	10%	85	8.5
Fix density	fixes / total_notes	0.635	0.635	60	15%	60	9.0
Net-fix delta	((fixes − known_issues) − prior.(fixes − known_issues)) / total_notes	0.032	0.032	43	15%	43	6.4
Known-issue debt	known_issues / total_notes	0.159	0.159	30	20%	70	13.9
Composite							55

* = raw value was clipped at the cohort 95th percentile to prevent outliers from compressing everyone else's scores. Sub-scores marked "med" substitute the cohort median where the input was missing (e.g. first patch on a minor line has no prior patch for net-fix delta).

6000.3.0a5: URP Decals become invisible when over 1000 units away from the camera

Known IssuesKnown issueCautionUUM-138945

ShaderVariantCollection.variantCount and ShaderVariantCollection.shaderCount returns 0 in Builds

6000.5.0a4,6000.0.66f1,6000.3.4f1,6000.4.0b4Known issueCaution

macOS stutters in a minimal project in the Editor in Play Mode

MetalKnown issueCautionmacOSUUM-85256

Editor memory leak in VisualElement when recompiling in a blank URP project

Known IssuesKnown issueCautionUUM-138000

Materials move to other GameObjects in a Prefab when disabling a child GameObject in Prefab Mode with an open SubScene

Known IssuesKnown issueCautionUUM-139663

6000.4.5f1

Other known issues

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