# Blender Blender 4.2.20 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/577165112126735191
- Permalink: https://whatsnew.fyi/product/blender/releases/2026-04-21-blender-4.2.20-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** — Line Art modifier has incorrect boundary on orthographic camera sensor fit vertical
- **fixed** — Editing custom prop of 'Temp' type in °C/F crashes Blender
- **fixed** — Normalize in graph editor no longer centers flat curves
- **fixed** — Collection preview lost when writing via bpy.data.libraries.write()
- **fixed** — Crash when loading file from within asset library

Blender 4.2.20 LTS features important bug fixes. It is released on the _v4.2 - 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 **v4.2 - Stable - LTS**.

##### Patch Notes

* 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))
* Normalize in graph editor no longer centers flat curves. ([#156273](https://projects.blender.org/blender/blender/issues/156273))
* Fix: collection preview lost when writing via bpy.data.libraries.write(). ((https://projects.blender.org/blender/blender/commit/ccb6dd8b2ba))
* Fix: crash when loading file from within asset library. ([7148a7c0dee616a487d57ab6ba2d8c49aa6205e9](https://projects.blender.org/blender/blender/commit/7148a7c0dee616a487d57ab6ba2d8c49aa6205e9))

For a detailed list of bug fixes in each release, see [ 4.2 LTS releases on blender.org](https://www.blender.org/download/lts/4-2/)

##### 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