Last week saw our first Release Candidate snapshot for 4.5.1, and in that time there have been even more critical bugfixes suitable for backporting. As such, we’re doing one more pass for good measure: 4.5.1-rc2 has arrived! Our top priority is ensuring the hotfix release is as stable as possible, so be sure to test and report any issues that aren’t present in 4.5-stable.

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Jump to the Downloads section, and give it a spin right now, or continue reading to learn more about improvements in this release. You can also try the Web editor, the XR editor, or the Android editor for this release. If you are interested in the latter, please request to join our testing group to get access to pre-release builds.

The illustration picture for this article comes from Trainatic, a cozy(?) game where you guide your train through a procedurally-generated world, unlocking powerful synergies and skilltrees to aid your unyielding destruction. You can buy the game on Steam, and follow the developer on Bluesky or YouTube.

What’s new

31 contributors submitted 45 improvements for this release. See our interactive changelog for the complete list of changes since the 4.5.1-rc1 release. You can also review all changes included in 4.5.1 compared to the previous 4.5 feature release.

  • 2D: Fix redundant calls of CanvasItemEditor::_update_lock_and_group_button on SceneTreeEditor node selection (GH-110320).
  • 3D: GridMap: Fix cell scale not applying to the cursor mesh (GH-104510).
  • Animation: Fix backward/pingpong root motion in AnimationTree (GH-110982).
  • Animation: Fix Reset on Save corrupt poses if scene has multiple Skeletons (GH-110506).
  • Animation: Make extended SkeletonModifiers retrieve interpolated global transform (GH-110987).
  • Core: Change “reserve called with a capacity smaller than the current size” error message to a verbose message (GH-110826).
  • Documentation: Fix and improve Node2D.move_local_{x,y}() description (GH-110878).
  • Editor: Add column boundary check in the autocompletion (GH-110017).
  • Editor: Fix DPITexture editor icon name (GH-110661).
  • Editor: Fix Quick Open history (GH-111068).
  • Editor: Fix selection of remote tree using the keyboard (GH-110738).
  • Editor: Fix the project file was not updated when some files were removed (GH-110576).
  • Editor: Set correct saved history after clearing (GH-111136).
  • Editor: Tweak macOS notarization export message in the editor (GH-110793).
  • Export: Windows: Fix application manifest in exported projects with modified resources (GH-111316).
  • GDExtension: Prevent breaking compatibility for unexposed classes that can only be created once (GH-111090).
  • GDScript: LSP: Fix repeated restart attempts (GH-111290).
  • GUI: Editor font: do not embolden the Main Font if it’s variable (GH-110737).
  • GUI: Enforce zero width spaces and joiners with missing font. Do not warn about missing non-visual characters (GH-111355).
  • GUI: Fix bottom panel being unintentionally draggable (GH-111121).
  • GUI: Fix LineEdit’s placeholder text being selected when double clicking (GH-110886).
  • GUI: Fix text servers build with disabled FreeType (GH-111001).
  • GUI: TextServer: Enforce zero width spaces and joiners to actually be zero width and not fallback to regular space (GH-111014).
  • Import: OBJ importer: Support bump multiplier (normal scale) (GH-110925).
  • Input: Fix invalid reported joypad presses (GH-111192).
  • Input: Fix weak and strong joypad vibration being swapped (GH-111191).
  • Physics: Fix crash when calling move_and_collide with a null jolt_body (GH-110964).
  • Physics: JoltPhysics: Fix Generic6DOFJoint3D not respecting angular limits (GH-111087).
  • Porting: Change macos.permission.RECORD_SCREEN version check from 10.15 to 11.0 (GH-110936).
  • Porting: macOS: Always use “Regular” activation policy for GUI, and headless main loop for command line only tools (GH-109795).
  • Porting: Unix: Fix retrieval of PID exit code (GH-111058).
  • Porting: Wayland: Emulate frame event for old wl_seat versions (GH-105587).
  • Porting: Wayland: Inhibit idle in DisplayServerWayland::screen_set_keep_on (GH-110875).
  • Rendering: Divide screen texture by luminance multiplier in compatibility (GH-110004).
  • Rendering: Fix glow intensity not showing in compatibility renderer (GH-110843).
  • Rendering: Fix LightmapGI not being correctly applied to objects (GH-111125).

This release is built from commit 69796bf7d.

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Standard build includes support for GDScript and GDExtension.

.NET build (marked as mono) includes support for C#, as well as GDScript and GDExtension.

While engine maintainers try their best to ensure that each preview snapshot and release candidate is stable, this is by definition a pre-release piece of software. Be sure to make frequent backups, or use a version control system such as Git, to preserve your projects in case of corruption or data loss.

Known issues

During the Release Candidate stage, we focus exclusively on solving showstopping regressions (i.e. something that worked in a previous release is now broken, without workaround). You can have a look at our current list of regressions and significant issues which we aim to address before releasing 4.5.1. This list is dynamic and will be updated if we discover new showstopping issues after more users start testing the RC snapshots.

With every release we accept that there are going to be various issues, which have already been reported but haven’t been fixed yet. See the GitHub issue tracker for a complete list of known bugs.

Bug reports

As a tester, we encourage you to open bug reports if you experience issues with this release. Please check the existing issues on GitHub first, using the search function with relevant keywords, to ensure that the bug you experience is not already known.

In particular, any change that would cause a regression in your projects is very important to report (e.g. if something that worked fine in previous 4.x releases, but no longer works in this snapshot).

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