# Blender Blender 4.5.1 LTS Maintenance Release !

- Product: Blender (https://whatsnew.fyi/product/blender)
- Vendor: Blender Foundation
- Date: 2025-07-29
- Original notes: https://store.steampowered.com/news/app/365670/view/529853121068803234
- Permalink: https://whatsnew.fyi/product/blender/releases/2025-07-29-blender-4.5.1-lts-maintenance-release

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

- **fixed** — Only last tangents layer is exported to fbx when mesh has multiple uv layers
- **fixed** — LibraryOverride bug because of Hair Curves
- **fixed** — Sculpting Surface Smooth causes decimation of Geometry
- **fixed** — Back side of rotate gizmo appears when approaching small object
- **fixed** — Crash when using cryptomatte node with image sequence having different sizes
- **fixed** — Unexpected Behavior on Closed Grease Pencil Curves with Connected Proportional Editing
- **fixed** — Geo Nodes Input Panel crashing when name is deleted
- **fixed** — Manifold boolean with plane is offset
- **fixed** — Light Temperature's Animate property button keyframes the wrong property
- **fixed** — Armature: Copy to Selected not working on Editbone lock unlocking
- **fixed** — Armature EditBone RNA paths incomplete
- **fixed** — Adaptive Subdivision Simple breaks UV
- **fixed** — Asset Library: Creating new pose library asset keyframes everything
- **fixed** — When reloading a linked character, while a NLA strip is in edit mode, the base action gets un-slotted
- **fixed** — Critical error when importing animation data from previous versions
- **fixed** — batch_for_shader with custom glsl shader very slow when inputs are optimized out of the shader program
- **fixed** — Blender crashes after exporting Grease Pencil to PDF
- **fixed** — Consistent crash with 2 image sequence materials playing from video files
- **fixed** — Bevel with selection including border edges crashes
- **fixed** — Broken USD skeletal animation rotations because of quaternion discontinuity

Blender 4.5.1 LTS features important bug fixes. It is released on the _v4.5 - Stable - LTS_ branch.  You can switch to this by **right-clicking** on the **Blender** entry in your library, select **Properties...**. Open the **Betas** tab and select **v4.5 - Stable - Stable**.

##### Patch Notes

* Fix: Only last tangents layer is exported to fbx when mesh has multiple uv layers. ([3a16c4995a1](https://projects.blender.org/blender/blender/commit/3a16c4995a1))
* LibraryOverride bug because of Hair Curves. ([#139527](https://projects.blender.org/blender/blender/issues/139527))
* Sculpting "Surface Smooth" causes decimation of Geometry. ([#141753](https://projects.blender.org/blender/blender/issues/141753))
* Back side of rotate gizmo appears when approaching small object. ([#111060](https://projects.blender.org/blender/blender/issues/111060))
* Crash when using cryptomatte node with image sequence having different sizes. ([#141810](https://projects.blender.org/blender/blender/issues/141810))
* Unexpected Behavior on Closed Grease Pencil Curves with Connected Proportional Editing. ([#142025](https://projects.blender.org/blender/blender/issues/142025))
* Geo Nodes Input Panel crashing when name is deleted. ([#141911](https://projects.blender.org/blender/blender/issues/141911))
* Manifold boolean with plane is offset. ([#142326](https://projects.blender.org/blender/blender/issues/142326))
* Light Temperature's Animate property button keyframes the wrong property. ([#142103](https://projects.blender.org/blender/blender/issues/142103))
* Armature: Copy to Selected not working on Editbone "lock" unlocking. ([#141940](https://projects.blender.org/blender/blender/issues/141940))
* Armature EditBone RNA paths incomplete. ([#142062](https://projects.blender.org/blender/blender/issues/142062))
* Adaptie Subdivision Simple breaks UV. ([#142060](https://projects.blender.org/blender/blender/issues/142060))
* Asset Library : Creating new pose library asset keyframes everything. ([#141909](https://projects.blender.org/blender/blender/issues/141909))
* When reloading a linked character, while a NLA strip is in edit mode, the base action gets un-slotted. ([#139509](https://projects.blender.org/blender/blender/issues/139509))
* Issue building blender 4.5-pre on linux with external manifold 3.1.1. ([#141943](https://projects.blender.org/blender/blender/issues/141943))
* Critical error when importing animation data from previous versions. ([#142106](https://projects.blender.org/blender/blender/issues/142106))
* `batch_for_shader` with custom glsl shader very slow when inputs are optimized out of the shader program. ([#137429](https://projects.blender.org/blender/blender/issues/137429))
* Blender had a crash after exporting Grease Pencil to PDF. ([#142183](https://projects.blender.org/blender/blender/issues/142183))
* Consistent crash: 2 image sequence materials playing from video files. ([#141918](https://projects.blender.org/blender/blender/issues/141918))
* Bevel (selection including border edges) crashes. ([#142045](https://projects.blender.org/blender/blender/issues/142045))
* Broken USD skeletal animation rotations because of quaternion discontinuity. ([#141718](https://projects.blender.org/blender/blender/issues/141718))
* Importing certain USD files crashes Blender. ([#142084](https://projects.blender.org/blender/blender/issues/142084))
* MeshSequenceCache modifier does not read Edge Creases. ([#141633](https://projects.blender.org/blender/blender/issues/141633))
* Blender crashes switching to sculpt mode on a hidden mesh. ([#141827](https://projects.blender.org/blender/blender/issues/141827))
* Memory leak when exporting object(s) with subdivision modifier to FBX. ([#128169](https://projects.blender.org/blender/blender/issues/128169))
* 4.5.0 - EEVEE 3D viewport Smudgy animation playback. Different results when multiple 3D viewports are open. ([#142217](https://projects.blender.org/blender/blender/issues/142217))
* Material preview lighting ch

_[Truncated at 4000 characters — full notes: https://store.steampowered.com/news/app/365670/view/529853121068803234]_