Changing CMYK to Pantone bug

I just had a simple task to convert my CMYK project to four pantone print which now is really tedious. I had this CMYK filled object, then i click on fill on status bar, then i go for spot colors. And now theres a bug: if you happen to have any colors in your document palette then clicking on a triangle next to "Spot" palettes (i wanted to convert to Solid Coated v3) to fold out actually changes to Document Palette and changes object color to first color form document palette. Trying to change color to pantone from Color Docker is even worse as it becomes unresponsive. can anyone confirm such behaviour?