Mixer brush is not useable with latest updates

Rosie, deleting the preferences solved the colorpicker problem for me.

Correct, this is now fixed so look for the latest update after 25.12.  

Thanks for that information. However it is very disappointing that the problem is not completely solved. I must confess I shall be very reluctant to install the update until I am absolutely certain the mixer brush is back to the way it was before. It's such a waste of time to be installing and uninstalling then reinstalling the software. I do hope someone in Adobe will listen to us!

I have found that this problem has been corrected in Photoshop v.26.0. I tried it in Beta and works well. There is one exception. The sample color short still adds the color you sample to the Background Color rather than the Foreground Color. If you don't want to use Beta at this point, you can reinstall Photoshop v.25.0; however, you will lose the ability to use many of the AI features that are now a part of the latest version of v.25.

Many months later and this issue has been resolved. I'm facing the same issue, unfortunately.

Any update on this? I ran into this problem today and I have so much content to edit that I need this mixer brush tool fixed.

I ran into this today. It seems to be the same issue that was also reported in this thread: https://community.adobe.com/t5/photoshop-ecosystem-bugs/p-win-macos-ps-25-11-mixer-brush-swatch-in-brush-options-is-no-longer-transparent/idi-p/14756267

This thread was technically opened first, but the other one includes some pictures, and it’s gotten some official acknowledgment from an Adobe employee while this one has not. So I figured I’d leave a comment with a link for anyone who ends up here from Google (as I did).

Me too.  I was learning new things and trying to follow along, and the box not loading the color was the first of many things that didn't go well. Furstrating.  

Anyone find a work around yet to this issue? 

I'm having the same issue as well. I've created a curriculum around the mixer brush and when I called Adobe on behalf of student complaints, I was told that the brushes I created in PS 2022 are no longer compatible with PS 2024. Where is the white paper on this? I have scoured the internet and can find nothing. If this truly is the case, where are the brushes that do work? The mixer brushes I've created are the same brushes used in Photoshop for coloring on a mask or adding color to an image, I just turned them into mixer brushes. By the way, Adobe Tech Support could not answer my questions so maybe you can.