# Blender Blender 4.5.9 LTS Maintenance Release !

- Product: Blender (https://whatsnew.fyi/product/blender)
- Vendor: Blender Foundation
- Date: 2026-04-21
- Original notes: https://store.steampowered.com/news/app/365670/view/577165112126735193
- Permalink: https://whatsnew.fyi/product/blender/releases/2026-04-21-blender-4.5.9-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** — Using multiple render layer nodes in GPU compositor fills up VRAM
- **fixed** — FCurve Settings RNA paths broken
- **fixed** — Line Art modifier has incorrect boundary on ortographic camera sensor fit vertical
- **fixed** — Editing custom prop of 'Temp' type in °C/F crashes Blender
- **fixed** — Grease Pencil: Noise modifier creates discontinuity
- **fixed** — Quick Favorites: some quick favorites are not removable from the menu
- **fixed** — Compositor: Stereo multilayered OpenEXR doesn't select the correct image
- **fixed** — Compositor: Assert in vulkan code, when rendering compositor in backdrop view
- **fixed** — LineArt: Make intersection lines follow face mark filtering
- **fixed** — LineArt: Collection intersection flags and priority inheritance not working
- **fixed** — Badly filled out Keying Set with Armature causes crash
- **fixed** — Offset setting does not affect surface placement
- **fixed** — Normalize in graph editor no longer centers flat curves
- **fixed** — Python error in Quick Liquid operator with Shade Auto Smooth
- **fixed** — Crash when loading file from within asset library
- **fixed** — Collection preview lost when writing via bpy.data.libraries.write()

Blender 4.5.9 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

* Using multiple render layer nodes in GPU compositor fills up VRAM. ([#155639](https://projects.blender.org/blender/blender/issues/155639))
* Fix: FCurve Settings RNA paths broken. ([007ec77047c](https://projects.blender.org/blender/blender/commit/007ec77047c))
* Line Art modifier has incorrect boundary on ortographic camera sensor fit vertical. ([#155591](https://projects.blender.org/blender/blender/issues/155591))
* Editing custom prop of 'Temp' type in °C/F crashes Blender. ([#155418](https://projects.blender.org/blender/blender/issues/155418))
* Fix #154685: Grease Pencil: Noise modifier creates discontinuity. ([#155370](https://projects.blender.org/blender/blender/issues/155370))
* Quick Favorites: some quick favorites are not removable from the menu. ([#155581](https://projects.blender.org/blender/blender/issues/155581))
* Regression: Compositor: Stereo multilayered OpenEXR doesn't select the correct image. ([#156200](https://projects.blender.org/blender/blender/issues/156200))
* Compositor: Assert in  vulkan code, when rendering compositor in backdrop view. ([#152536](https://projects.blender.org/blender/blender/issues/152536))
* LineArt: Make intersection lines follow face mark filtering. ((https://projects.blender.org/blender/blender/commit/fa17e7e6a42))
* LineArt: Collection intersection flags and priority inheritance not working. ([#156431](https://projects.blender.org/blender/blender/issues/156431))
* Badly filled out Keying Set with Armature causes crash. ([#156643](https://projects.blender.org/blender/blender/issues/156643))
* Fix #154120: Offset setting does not affect surface placement. ([#154157](https://projects.blender.org/blender/blender/issues/154157))
* Normalize in graph editor no longer centers flat curves. ([#156273](https://projects.blender.org/blender/blender/issues/156273))
* Python error in *Quick Liquid* operator with *Shade Auto Smooth* (object_quick_effects.py). ([#156134](https://projects.blender.org/blender/blender/issues/156134))
* Fix: crash when loading file from within asset library. ([45721454be3](https://projects.blender.org/blender/blender/commit/45721454be3))
* Fix: collection preview lost when writing via bpy.data.libraries.write(). ((https://projects.blender.org/blender/blender/commit/b2ac8f0e3d0))

For a detailed list of bug fixes in each release, see [ 4.5 LTS releases on blender.org](https://www.blender.org/download/lts/4-5/)

##### LTS Program

Learn more about the [LTS program on blender.org](https://www.blender.org/download/lts/)

##### Stay up-to-date

You can follow Blender on social media:

Keep reporting any issues you find to make this LTS the most stable release ever !

Happy blending,
The Blender team