# Blender Blender 4.5.6 LTS Maintenance Release !

- Product: Blender (https://whatsnew.fyi/product/blender)
- Vendor: Blender Foundation
- Date: 2026-01-20
- Original notes: https://store.steampowered.com/news/app/365670/view/373368994105658779
- Permalink: https://whatsnew.fyi/product/blender/releases/2026-01-20-blender-4.5.6-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'.

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- **fixed** — User count corruption by bpy.ops.object.make_single_user
- **fixed** — Bone in-between slider is drawn on top of the header
- **fixed** — Grease Pencil crash when pasting strokes when the object has no materials
- **fixed** — VSE preview doesn't update when editing Frame Number in Speed Control
- **fixed** — Sculpt Mode crash with Grab 2D Brush while Grab Active Vertex enabled
- **fixed** — OSL custom camera rendering memory leak
- **fixed** — Default values on Noise Modifier in the Graph Editor set to 0 instead of 1
- **fixed** — Graph Editor goes blank if Preview Range and Normalize are enabled
- **fixed** — Remesh converts vertex groups to regular attributes
- **fixed** — Curve sculpt mode pressing shift to temporarily switch to the Smooth brush doesn't work
- **fixed** — Crash in vertex paint after redoing
- **fixed** — Reference spheres are offset to the bottom and cropped when tool header and 3d view header are flipped to the bottom
- **fixed** — Crash redoing sculpt move
- **fixed** — glTF exporter lamp temperature conversion
- **fixed** — Compositor AOV causes viewport to stop updating
- **fixed** — glTF exporter exporting not normalized lamp
- **fixed** — Broken selection drawing for flat objects in ortho view
- **fixed** — Baking animation removes constraints from linked file
- **fixed** — Sculpt Pose brush Squash & Stretch deformation sets mesh position to -nan(ind)
- **fixed** — Action should not be re-used when it comes from linked file

Blender 4.5.6 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

* User count corruption by bpy.ops.object.make_single_user. ([#149541](https://projects.blender.org/blender/blender/issues/149541))
* Bone in-between slider is drawn on top of the header. ([#147705](https://projects.blender.org/blender/blender/issues/147705))
* Grease Pencil: Crash when pasting strokes when the object has no materials. ([#149837](https://projects.blender.org/blender/blender/issues/149837))
* VSE: Preview doesn’t update when editing "Frame Number" in Speed Control. ([#149765](https://projects.blender.org/blender/blender/issues/149765))
* Sculpt Mode Crash With Grab 2D Brush While "Grab Active Vertex" Enabled. ([#149795](https://projects.blender.org/blender/blender/issues/149795))
* OSL Custom Camera Rendering has Memory Leak. ([#145985](https://projects.blender.org/blender/blender/issues/145985))
* Default Values on Noise Modifier in the Graph Editor set to 0 instead of 1. ([#149942](https://projects.blender.org/blender/blender/issues/149942))
* Graph Editor goes blank if Preview Range and Normalize are enabled. ([#150036](https://projects.blender.org/blender/blender/issues/150036))
* Remesh converts vertex groups to regular attributes. ([#150016](https://projects.blender.org/blender/blender/issues/150016))
* Curve sculpt mode: Pressing shift to temporarily switch to the Smooth brush doesn't work. ([#149437](https://projects.blender.org/blender/blender/issues/149437))
* Crash in vertex paint after redoing. ([#150014](https://projects.blender.org/blender/blender/issues/150014))
* Reference Sheres are offset to the bottom and cropped, when tool header and 3d view header are flipped to the bottom. ([#149843](https://projects.blender.org/blender/blender/issues/149843))
* Crash redoing sculpt move. ([#150257](https://projects.blender.org/blender/blender/issues/150257))
* Fix: glTF exporter: Fix lamp temperature convertion. ((https://projects.blender.org/blender/blender/commit/d985b2e6ecc))
* Compositor: AOV causes viewport to stop updating. ([#150019](https://projects.blender.org/blender/blender/issues/150019))
* Fix: glTF exporter: Fix exporting not normalized lamp. ([3a970cff93d](https://projects.blender.org/blender/blender/commit/3a970cff93d))
* Broken selection drawing for flat objects in ortho view. ([#139555](https://projects.blender.org/blender/blender/issues/139555))
* Baking animation removes constraints from linked file. ([#149724](https://projects.blender.org/blender/blender/issues/149724))
* Sculpt Pose brush Squash & Strech deformation sets mesh position to -nan(ind). ([#130465](https://projects.blender.org/blender/blender/issues/130465))
* Action should not be re-used when it comes from linked file. ([#150289](https://projects.blender.org/blender/blender/issues/150289))
* NlaStrip creation doesn't respect name parameter. ([#150408](https://projects.blender.org/blender/blender/issues/150408))
*  copying on the steam version of blender crashes steam and then blender when you try to re open it. ([#150414](https://projects.blender.org/blender/blender/issues/150414))
* Face Selection doesn't work properly when mesh is displayed as wire in Solid mode - Vulkan AMD GPU. ([#150336](https://projects.blender.org/blender/blender/issues/150336))
* Fix: Make script_pyapi_bpy_driver_secure_eval pass with python >3.11. ([56f74eb24f4](https://projects.blender.org/blender/blender/commit/56f74eb24f4))
* Image data-block can not load images on EEVEE (but works in Cycles). ([#149039](https://projects.blender.org/blender/blender/issues/149039))
* Grease Pencil draw on to the surface issue. ([#141896](https://projects.blender.org/blender/blender/issues/141896))
* Undoing brushstrokes in texture paint doesn't visually happen until view

_[Truncated at 4000 characters — full notes: https://store.steampowered.com/news/app/365670/view/373368994105658779]_