Hey folks, any idea what's going on in this video? It's not me, but I can't figure out the person's problem to help them.

Picking red on the color wheel paints in blue and vice versa. Green and purple are fin though....

https://www.youtube.com/watch?v=ytWpntd2Ga0

Hi, is it like Bug 385519?

I'm sorry, that video doesn't help with anything at all. It doesn't even show what operating system they are using. At the very least we will need the output from "Help"->"Show system information for bug reports" and the system specs to even be able to start speculating.

Krita Version: 3.3.0 OS Information Build ABI: x86_64-little_endian-llp64 Build CPU: x86_64 CPU: x86_64 Kernel Type: winnt Kernel Version: 6.1.7601 Pretty Productname: Windows 7 SP 1 (6.1) Product Type: windows Product Version: 7sp1 OpenGL Info Vendor: Google Inc. Renderer: "ANGLE (ATI Radeon HD 4550 (Microsoft Corporation WDDM 1.1) Direct3D11 vs_4_1 ps_4_1)" Version: "OpenGL ES 3.0 (ANGLE 2.1.0.8613f4946861)" Shading language: OpenGL ES GLSL ES 3.00 (ANGLE 2.1.0.8613f4946861) Requested format: QSurfaceFormat(version 3.0, options QFlags(DeprecatedFunctions), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, profile QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile)) Current format: QSurfaceFormat(version 3.0, options QFlags(), depthBufferSize 24, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8, stencilBufferSize 8, samples 0, swapBehavior QSurfaceFormat::SwapBehavior(DefaultSwapBehavior), swapInterval 0, profile QSurfaceFormat::OpenGLContextProfile(NoProfile)) Version: 3.0 Supports deprecated functions false is OpenGL ES: true QPA OpenGL Detection Info supportsDesktopGL: false supportsAngleD3D11: true isQtPreferAngle: true overridePreferAngle: false == log == createPlatformOpenGL­Context QSurfaceFormat(version 3.0, options QFlags(DeprecatedFunctions), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, profile QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile)) Basic wglCreateContext gives version 1.1 OpenGL version too low OpenGL 2.0 entry points not found GPU features: QSet() supportedRenderers GpuDescription(vendorId=0x1002, deviceId=0x9540, subSysId=0x26c1043, revision=0, driver: "atiumd64.dll", version=8.14.10.630, "ATI Radeon HD 4550 (Microsoft Corporation WDDM 1.1) ") renderer: QFlags(0x2|0x4|0x8|0x20) Qt: Using EGL from libEGL Qt: Using OpenGL ES 2.0 from libGLESv2 create Created EGL display 0x2d7b920 v 1 . 4 createPlatformOpenGL­Context QSurfaceFormat(version 3.0, options QFlags(DeprecatedFunctions), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, profile QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile)) ~QWindowsEGLStaticCon­text Releasing EGL display 0x2d7b920 == end log ==

Oh dear goodness gracious... (trying to ignore the fact that all the line breaks are lost)
That's a 9-year-old driver. Please ask them to update to the latest 4-year-old driver for their ATI Radeon HD 4550 graphics card: https://support.amd.com/en-us/download/ ... ows+7+-+64

(The above link was found here: https://support.amd.com/en-us/kb-articl ... .aspx#win7)