***UPDATE***
I just discovered that selecting the square color picker surrounded by the circle works perfect, no matter what size. For an unknown reason the triangle color picker is not working properly (see below.)
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I'm using the latest version of Krita. The problem is prevalent in 2.9.7.3 and 2.9.7.4.

Last night the Advanced Color Selection docker appeared OK. Tonight it's doing this:

https://www.dropbox.com/s/pt6oy7uhsljhr ... 2.PNG?dl=0
and this:
https://www.dropbox.com/s/0sdewtt0ahw0d ... 3.PNG?dl=0

Note the repeated triangles at the bottom of the main triangle.

In addition, selecting colors on the color ring is erratic. Currently I can select a new color on the upper two thirds of the ring but the lower third does not select a color. Instead it simply moves the circle back and forth on the bottom of the triangle according to the position I've clicked on the ring. Examples: Clicking to the lower right of the ring moves the circle to the bottom of the triangle, off to the right. Clicking to lower left of the ring does the same in the triangle, moving the circle to the left. Clicking in the center of the ring moves the circle to the lower portion of the triangle, centered.

Last observation: I can enlarge the docker to the point of making a single triangle. When I've achieved a single triangle both the triangle color picker and the ring work as intended.
https://www.dropbox.com/s/cyc4ahiufe8y1 ... 4.PNG?dl=0

Any suggestions as to how to make the color selector appear and act correctly? I've not made any changes to my system, unless Windows 10 snuck in an update while I wasn't looking during the night. I've even tried to turn on and off OpenGL but it has no effect. Right now my workaround is a rather large color picker docker taking up valuable screen real estate.

Chuck

Hi there. Not a solution, but as for the ring issue I sometimes try to put the problem off by increasing/decreasing the amount of colors on it.
- Bug 352253 https://bugs.kde.org/show_bug.cgi?id=352253
- Bug 348428 https://bugs.kde.org/show_bug.cgi?id=348428

I think I might have broken that... It's https://bugs.kde.org/show_bug.cgi?id=352253, right? I'll put it on my todo. For now, after this release, week days are for the Qt5 port, weekends are for bug fixing

That would be the bug.

I'll await an upcoming release. In the meantime I'll use one of the other color selectors.

Thanks,

Chuck