As you begin to customize Krita, a number of the settings are saved to your computer. This will make sure that Krita remembers everything the next time it is started. This can sometimes create issues when new versions of the program are released. To fix these issues, resetting the configuration file is required. To do this, hold down Ctrl + Alt + Shift before starting Krita. A prompt will appear asking you to clear your kritarc file. If you click Yes, the settings file will be cleared out.