SUMMARY
Something I recall confusing me a fair bit when first getting into Krita was configuration of the Color Selector. When choosing a different Color Model Type, the Color Selector doesn't automatically conform to an equivalent form of that Color Model, until the user explicitly selects one.

STEPS TO REPRODUCE
1. Configure Krita -> Color Selector Settings
2. For demonstration, with HSV selected, select the common square selector with hue ring border (bottom side is black).
3. Select a different Color Model type, for example HSL.

OBSERVED RESULT
The color selector stays the exact same despite selecting a different color model type. The user must realize that they have to explicitly set a new color selector for one that conforms to the selected color model.

EXPECTED RESULT
The color selector should automatically conform to the closest color model equivalent as soon as a new color model type is selected.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian sid
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.12.9 (Appimage)

ADDITIONAL INFORMATION
HSV color model has 9 different color selectors while other color models have 7 different color selectors. HSV has two extra color selectors for alternative "spectrums" of existing forms.