[r490] CTRL + C = unhandled exception red screen crash

[justifun]

Checks

• I have read and understand the bug report guidelines
• I checked for existing similar reports to avoid submitting a duplicate
• I verified the issue occurs in the latest beta release to avoid submitting an issue that has already been resolved

Problem description

Editor crashes when selecting and object and pressing CTRL + C to copy it

Seems to only happen in r490 beta

Upload a project

copyBug.zip

Steps to reproduce

1. add a sprite to a new project
2. select it and press ctrl + c to copy it
3. crash

Observed result

Error report information
Type: unhandled exception
File: https://editor.construct.net/r490/components/editors/layoutView/layoutView.js, line 1, col 66003
Message: Uncaught TypeError: t?.gl(...)?.Ml is not a function
Stack: TypeError: t?.gl(...)?.Ml is not a function at globalThis.oz.aN (https://editor.construct.net/r490/components/editors/layoutView/layoutView.js:1:66003) at globalThis.oz.$j (https://editor.construct.net/r490/components/editors/layoutView/layoutView.js:1:66497) at https://editor.construct.net/r490/components/editors/layoutView/layoutView.js:1:4874 at Wd.Event.XBi.tUi (https://editor.construct.net/r490/main.js:29:251463) at rb.vn.hF.QQi.dispatchEvent (https://editor.construct.net/r490/main.js:29:249560) at rb.vn.hF.QQi.$j (https://editor.construct.net/r490/main.js:29:353738) at Hw.$j (https://editor.construct.net/r490/main.js:29:357181) at HTMLDocument. (https://editor.construct.net/r490/main.js:29:355179)
Construct version: r490
URL: https://editor.construct.net/r490/
Date: Wed Jun 17 2026 06:48:31 GMT-0700 (Pacific Daylight Time)
Uptime: 88.8 s

Platform information
Product: Construct 3 r490 (beta)
Browser: Chrome 149.0.7827.103
Browser engine: Chromium
Context: browser
Operating system: Windows 11
Device type: desktop
Device pixel ratio: 0.8999999761581421
Logical CPU cores: 16
Approx. device memory: 32 GB
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36
Language setting: en-US

WebGPU information
Renderer: WebGPU
Compatibility mode: no
Supports GPU profiling: yes
Major performance caveat: no
Maximum texture size: 16384
Adapter vendor: nvidia
Adapter architecture: lovelace
Adapter device: (unavailable)
Adapter description: (unavailable)
Adapter type: (unavailable)
Adapter backend: (unavailable)
Adapter features: bgra8unorm-storage, clip-distances, core-features-and-limits, depth-clip-control, depth32float-stencil8, dual-source-blending, float32-blendable, float32-filterable, indirect-first-instance, primitive-index, rg11b10ufloat-renderable, shader-f16, subgroups, texture-component-swizzle, texture-compression-bc, texture-compression-bc-sliced-3d, texture-formats-tier1, texture-formats-tier2, timestamp-query

Expected result

not crash editor

Affected platforms

No response

Affected browsers

No response

Last unaffected release (including beta releases)

489

First affected release (including beta releases)

490

Additional remarks

No response

Platform information

Product: Construct 3 r490 (beta)
Browser: Chrome 149.0.7827.103
Browser engine: Chromium
Context: browser
Operating system: Windows 11
Device type: desktop
Device pixel ratio: 0.8999999761581421
Logical CPU cores: 16
Approx. device memory: 32 GB
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36
Language setting: en-US
Audio sample rate: 48000 Hz
Audio output channels: 2
Audio output interpretation: speakers
Renderer: WebGPU
Compatibility mode: no
Supports GPU profiling: yes
Major performance caveat: no
Maximum texture size: 16384
Adapter details: nvidia/lovelace
Adapter features: bgra8unorm-storage, clip-distances, core-features-and-limits, depth-clip-control, depth32float-stencil8, dual-source-blending, float32-blendable, float32-filterable, indirect-first-instance, primitive-index, rg11b10ufloat-renderable, shader-f16, subgroups, texture-component-swizzle, texture-compression-bc, texture-compression-bc-sliced-3d, texture-formats-tier1, texture-formats-tier2, timestamp-query

[NedSanders]

Came here to report this - just adding some details after testing:

• Crash occurs on any attempt to copy, not just via keyboard shortcut
• Can confirm this is exclusive to r490 beta
• Have cleared browser cache and this did not fix
• Happens across all projects when using r490 beta

Hoping this gets fixed soon!

[AshleyScirra]

@DiegoScirra - note this also happens with Ctrl+drag to clone.

[brettpenzer123]

A crash occurs when creating a new layout (with or without an event sheet) and then undoing the action.

This is not limited to using Ctrl+Z; it also happens when undoing via the UI