### Most appropriate sub-area of p5.js? - [ ] Accessibility - [ ] Color - [ ] Core/Environment/Rendering - [ ] Data - [ ] DOM - [ ] Events - [ ] Image - [ ] IO - [ ] Math - [ ] Typography - [ ] Utilities - [X] WebGL - [ ] Build Process - [ ] Unit Testing - [ ] Internalization - [ ] Friendly Errors - [ ] Other (specify if possible) ### p5.js version v1.9.0 ### Web browser and version Chrome ### Operating System Windows ### Steps to reproduce this ### Steps: 1. Create a scene with lighting and materials. 2. Use the framebuffer block to apply a filter to the scene. 3. Observe that the lights() and specularmaterial() functions do not behave as expected within the framebuffer block when filter is applied. 