Mouse lock fails (Linux CEF)

[IdeasPerSecond]

Problem description

Pointer lock fails on Linux using the new CEF exporter

Attach a .c3p

Pointer Lock Fails Linux.zip

Steps to reproduce

1. Export Project for Linux (CEF)
2. Select Options
   
3. Linux Options
   
4. Extract and run on Linux (Tested with Ubuntu 24.04.1 LTS)

Observed result

It seems there is a Wrong Document Error, as if the pointer lock is being called in the wrong place.
"Uncaught (in promise) WrongDocumentError: The root document of this element is not valid for pointer lock."

Expected result

I expected the mouse lock to work as usual, not fail completely.

More details

System details

View details

Platform information
Product: Construct 3 r416.2 (stable)
Browser: Chrome 131.0.6778.264
Browser engine: Chromium
Context: browser
Operating system: Linux 6.8.0
Device type: desktop
Device pixel ratio: 1
Logical CPU cores: 8
Approx. device memory: 8 GB
User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Language setting: en-US

Local storage
Storage quota (approx): 65 gb
Storage usage (approx): 145 kb (0%)
Persistant storage: No

Browser support notes
This list contains missing features that are not required, but could improve performance or user experience if supported.

Nothing is missing. Everything is OK!
WebGL information
Version string: WebGL 2.0 (OpenGL ES 3.0 Chromium)
Numeric version: 2
Supports NPOT textures: yes
Supports GPU profiling: no
Supports highp precision: yes
Vendor: Google Inc. (Intel)
Renderer: ANGLE (Intel, Mesa Intel(R) HD Graphics 530 (SKL GT2), OpenGL 4.6)
Major performance caveat: no
Maximum texture size: 16384
Point size range: 1 to 255
Extensions:

EXT_clip_control
EXT_color_buffer_float
EXT_color_buffer_half_float
EXT_conservative_depth
EXT_depth_clamp
EXT_disjoint_timer_query_webgl2
EXT_float_blend
EXT_polygon_offset_clamp
EXT_render_snorm
EXT_texture_compression_bptc
EXT_texture_compression_rgtc
EXT_texture_filter_anisotropic
EXT_texture_mirror_clamp_to_edge
EXT_texture_norm16
KHR_parallel_shader_compile
NV_shader_noperspective_interpolation
OES_draw_buffers_indexed
OES_sample_variables
OES_shader_multisample_interpolation
OES_texture_float_linear
OVR_multiview2
WEBGL_blend_func_extended
WEBGL_clip_cull_distance
WEBGL_compressed_texture_astc
WEBGL_compressed_texture_etc
WEBGL_compressed_texture_etc1
WEBGL_compressed_texture_s3tc
WEBGL_compressed_texture_s3tc_srgb
WEBGL_debug_renderer_info
WEBGL_debug_shaders
WEBGL_lose_context
WEBGL_multi_draw
WEBGL_polygon_mode
WEBGL_provoking_vertex
WEBGL_stencil_texturing
Audio information
System sample rate: 48000 Hz
Output channels: 2
Output interpretation: speakers
Supported decode formats:

WebM Opus (audio/webm;codecs=opus)
WebM Vorbis (audio/webm;codecs=vorbis)
MPEG-4 Opus (audio/mp4;codecs=opus)
MPEG-4 AAC (audio/mp4;codecs=mp4a.40.2)
MP3 (audio/mpeg)
FLAC (audio/flac)
PCM WAV (audio/wav;codecs=1)
Supported encode formats:

WebM Opus (audio/webm;codecs=opus)
MPEG-4 Opus (audio/mp4;codecs=opus)
Video information
Supported decode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08)
WebM VP9 (video/webm;codecs=vp9)
WebM VP8 (video/webm;codecs=vp8)
MPEG-4 AV1 (video/mp4;codecs=av01.0.00M.08)
MPEG-4 H.264 (video/mp4;codecs=avc1.420034)
Supported encode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08)
WebM VP9 (video/webm;codecs=vp9)
WebM VP8 (video/webm;codecs=vp8)
WebM H.264 (video/webm;codecs=avc1.420034)
MPEG-4 AV1 (video/mp4;codecs=av01.0.00M.08)
MPEG-4 VP9 (video/mp4;codecs=vp9)
MPEG-4 H.264 (video/mp4;codecs=avc1.420034)

[AshleyScirra]

The sample project enables unadjusted movement, but that option is not actually supported by the Chromium browser engine on Linux yet (see the compatibility table here). So if that mode is enabled and it doesn't work, that would be my assumption why.

[IdeasPerSecond]

Still fails even without the option checked, unfortunately.

[AshleyScirra]

OK, I think this is actually that CEF doesn't support pointer lock at the moment. I'll see if we can find some workaround.