Disabling `webgl.enable-debug-renderer-info` also returns 500, suggesting it is the debug renderer info blocking. Searching for UNMASKED_RENDERER_WEBGL also brings up some stuff.
Bug 1966860 Comment 2 Edit History
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Disabling `webgl.enable-debug-renderer-info` also returns 500, suggesting it is the debug renderer info blocking. Searching for UNMASKED_RENDERER_WEBGL in qwen's source also brings up some stuff.