Created attachment 143863 [details] gif When picking a color in the color picker, there will be three squares. "Currently selected color", "Last drawn color" and "Last selected color" are displayed respectively. However, black is displayed in "Color History" and "Image Color"
In 5.2.3, this issue still exists. But considering that we have a 'wide color gamut color picker'. It can work normally and is highly likely to replace the original color picker. Therefore, it can be considered to close this bug report.
I can confirm this is still an issue on latest master. For me on Linux 5.2.3 and latest master the "Last drawn color" and "Last selected color" squares are empty (don't show up at all) instead of appearing as black. Seems the difference in behavior is OS specific (but incorrect either way). Reproduce steps: 1. Draw on canvas with first color 2. In color selector choose a new color and draw on canvas (repeat a few times to have some history) 3. In the Color Selector's color history click on a previous color (Observe "Last drawn color" and "Last selected color" squares are either missing or black