I am having very similar color shifts in the latest version, as well.
Hope this screen shot of pre (left image) & post (right image) PhotoAI shows the color shift. I just updated to the latest version & have not been able to generate a useable image so far without the color shift. Until this update I’ve been very pleased with the results.
Topaz Photo AI version 1.2.7 / Photoshop 24.2.0 / macOS Ventura version 13.2