Blender — Blender 4.5.2 LTS Maintenance Release !

Blender 4.5.2 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

• Cleanup bpy builds on PyPI and archive them on Download. (#146)
• Vertex/Weight Paint Mask issues with subdivision. (#143317)
• Regression: Shading Issue transforming a object with custom normals. (#142485)
• Missnamed Built-In Shader. (#143485)
• Asset browser capture screenshot preview does not capture Cycles rendered preview. (#141732)
• USD: World uses wrong output node. (#143291)
• Vertex Weight Proximity sets Normalize Weights checkbox to default state after options switch. (#143360)
• UI: grey-out NDOF orbit center settings in "Fly mode". (98596c9bccc)
• Fix: Grease Pencil: Remove fill guide attribute in remove_fill_guides. (5c1e9125b91)
• Tool gizmo disappears when resizing regions & areas. (#143629)
• Pivot to Active Vertex in Mesh Sculpt mode not working. (#143630)
• Fix: SculptSession#last_active_vert uses incorrect value. ((https://projects.blender.org/blender/blender/commit/fa3bebbbd6f))
• bpy.ops.grease_pencil.join_selection(type='JOIN') makes existing strokes broken. (#142325)
• Action editor with playhead snapping crash. (#143154)
• macOS complains about being unable to use Vulkan if a user reuses Vulkan user preferences. (#143304)
• [Clipping Region] Multi 3D Views & Alt+B enabled - click selection picks mesh outside region before target in mesh edit mode. (#142800)
• Attribute node (Type: View Layer) is not updated during playback in EEVEE when nothing is animated. (#143323)
• OpenGL: --debug-gpu doesn't work in background mode. (#142620)
• Field Nodes not outputing values from node groups. (#142202)
• Old AMD Drivers: Crashes on startup (4.4.0 and above). (#143087)
• Error "Selected faces required" When Using 'K' Knife Cut After Confirming Previous Cut with 'Shift+K' in Edit Mode. (#143439)
• Hydra Storm: Error in console when rendering. (#143722)
• Fix: Nodes: restore active node after copy-pasting nodes. (0a37bba5a99)
• Dot dash modifier makes grease pencil disappear. (#143870)
• Solidify Algorithm Behaves Strange/Different in 4.5. (#143789)
• Vulkan: Assert when sliding vertex. (#143685)
• Blender displays a crash popup when OSL camera references oso file that doesn't exist. (#143907)
• Fix: Cycles: Show correct minimum OptiX GPU driver in preferences. ((https://projects.blender.org/blender/blender/commit/c1c735dd5a0))
• Repeated deletion & Ctrl+Z on a linked library may cause crash. (#143888)
• Broken Normals when realizing Instances with Geometry Nodes that have an Object with WeightedNormal Modifier (and mirrored). (#143708)
• Regression: Crash in Vertex & Weight Paint when applying deform modifier. (#143238)
• Fix: Poll function for asset screenshot operator. (7a1ad217c69)
• Intel Arc OpenGL: GPU compositor infill is inconsistent. (#141173)
• Volume shader masked by shader with alpha blend transparency. (#143294)
• NVIDIA Vulkan: Blender 4.5 crash on startup with MSI Afterburner/RivaTuner Statistic Server. (#141806)
• Fix: VSE: Wrong context used when dropping audio files. ((https://projects.blender.org/blender/blender/commit/d648f124756))
• Cryptomatte: Precision issues with matte output. (#143775)
• Bevel & Join Geometry crash. (#143450)
• Viewport: Blender crashes when entering sculpting mode. (#142093)
• Problem with edit lines display on grease pencil object. (#143952)
• 4.5 LTS: Fix: armature "Auto-Name by Axis" creating invalid UTF8 names. (b670fad9cb33cb5c0b375826fc684312ab4a844b)
• Cleanup: No longer require VSE Strip struct memory layout to never change [4.5]. (c4c612ba5337f19f2cbe7eb4854a2babdbce1e65)
• Intel Windows OpenGL: Dilate node feather mode does not work. (#141436)
• Curves in EDIT mode appear thinner than in OBJECT mode on HiDPi displays. (#141980)
• Vertex Paint: Subtract blending mode is broken. (#143399)
• Regression: Frustum culling is incorrect in Blender 4.5 with older AMD GPU drivers. (#143336)
• Transparent background is not fully transparent in Workbench Render Engine. (#144040)
• Curves Edit Mode: Redo duplicate move broken. (#143739)
• Fix #144014: Driver for data.shape_keys path fails with GPU subdivision. (#144030)
• Weight Painting Stroke Falloff Not Rounding. (#134160)
• Sculpt: Repeatedly Remeshing causes out of memory crash. (#143257)
• Nuked my C: drive accidentally using Blender. (#139585)
• Assert browsing a non UTF8 render output path. (#143018)
• Creating a face between two edges can result in a bow-tie quad. (#143905)
• Running New Scene in an Empty file crashes blender. (#144086)
• ASAN error when viewing collection in the spreadsheet. (#143532)
• Eevee World Sun Shadow no longer works in 4.5. (#142046)
• “Clear Keyframes” Affects All Bones. (#143818)
• Compositor Keying node "Feather Size" and "Dilate Size" inputs do nothing when given negative values. (#144070)
• Fix: Assert in Keying node with no input. ((https://projects.blender.org/blender/blender/commit/d117ef4af3d))
• VSE video thumbnails performance / UI smoothness issues (since 4.3?). (#142912)
• Animation FPS progressively slower from Blender 4.3 to 4.5. (#140706)
• Assertion: BLI_string_ref.hh operator, at 'index < size_'. (#143539)
• Eevee World Sun Shadow no longer works in 4.5. (#142046)
• Fix: EEVEE: VolumeProbeModule do_full_update_. (20f7bc67506)
• Cryptomatte picker does not work with sequences. (#144107)
• Vulkan AMD: Wireframe overlay renders without occlusion culling when smooth wires is turned off. (#142537)
• Grease Pencil Bezier Curves, doesn't respect Overlay Guides when Grid Snapping is on. (#143534)
• Blender has stopped working when copying a Grease-Pencil stroke in Edit-mode. (#142700)
• VSE proxies for image sequences do not work (since 4.5). (#144254)
• Node tool crashes under specific scenario. (#144126)
• 4.5 Grease Pencil Light feature doesn't work anymore. (#144170)
• Sculpting Dynotopo R Button display artifact (NOT Critical). (#142927)
• EEVEE: Shadows are missing if trasparency of a material is set by Instance or Object attributes. (#144054)
• Mesh transforms do not show up in the viewport if Blender is run with --debug-gpu-force-workounds. (#144174)
• Blender Project Instant Crash Upon Opening. (#143720)
• Grease Pencil 3 Moving Strokes to other layers cause them the lose Parenting. (#139258)
• Calling 'bpy.ops.object.lineart_bake_strokes' through the Python API in 4.5+ causes the UI to stop responding. (#144392)
• Edge slide misbehaves when sliding towards triangle. (#144270)
• VSE: Scopes sometimes stop updating during playback. (#144432)
• Return value of bpy.app.translations.locales changed in 4.5. (#144306)
• Vulkan: Disable descriptor buffers. (84d0840f0c8)
• Vulkan: Destroy resources in submission thread. (3b081259efc)
• Fix: Compositor: Wrong tooltip for Crop Node. (3c2bd8cde6e)
• Removing and then redefining override causes a crash. (#144373)
• Fix #144408: Crash when cancelling primitive tool with automerge on empty drawing. (#144470)
• Grease Pencil: Convert Curve Type operator always creates Bézier curves with free handles. (#144369)
• Crash when setting default_value for a color socket on a material node group. (#143551)
• Fix: GL Compilation Subprocess race condition. (05b26ef4eb8)
• Compositor crash cycling between inputs in compositor. (#144411)
• Crash in texture drawing. (#143691)
• Fix: Grease Pencil: Attribute interpolate with randomization. (1b6c73b0918)
• Reprojcting Bezier Grease Pencil Strokes doesn't move the handles with the strokes. (#131108)
• Fix: Grease Pencil: Bézier handles not effected by Snap To Grid. (0c6941eee39)
• Fix #139094: Grease Pencil: Primitive Tools not initializing u_scale attribute. (72bf515e585)
• Fix: Grease Pencil: SVG and PDF bounding box size bug. (118fe9cd248)
• Cycles: oneAPI: Disable L0 copy optimization for several dGPUs. (4bc473807f7)
• grease pencil 3.0 subdivision pinches at the stroke's start point. (#142644)
• FBX exporter encounters error when exporting meshes with tangents. (#144592)
• Fix: execute_node_group only accepting positive values for arguments. ((https://projects.blender.org/blender/blender/commit/bc6bc8f5d51))
• Animation & Overrides; Keyframe insertion should result in warning/error?. (#144371)
• Build: Only link to librt on Linux. (41539e4fa80)
• Fix: Build failure on riscv64 platform. (9745245933a)
• Blender crashes opening certain file. (#144749)
• ACES 1.3 errors in Blender 4.5.1. (#144681)
• LineArt: Backport thickness to radius conversion. (ae8a273c7afcccae43180596b8970f96c8e6435c)
• Can't Keyframe or add driver to UV Map active render property. (#142780)
• Vulkan Backend Renders Control Points Incorrectly. (#143231)
• Vulkan: Swap to system memory for device local memory. (92cb40fd2ead492c907704feb24cb99227d60f1a)
• Vulkan: Displaying Bone Keys in Graph Editor Causes VRAM Leak. (#142305)
• Fix: Vulkan: Use after free when switching scenes. (960e0dae10)

For a detailed list of bug fixes in each release, see 4.5 LTS releases on blender.org

LTS Program

Learn more about the LTS program on blender.org

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

Happy blending, The Blender team