Purple hue slider affects blues

Lightroom version number: 12.0.1 (Adobe Camera Raw 15.0 displays the same issue)

OS Version number: Windows 10 Pro N, build 19045

I noticed in the most recent version of LRC that purple hue slider started to affect the blue color. Same thing happens in Adobe Camera Raw too. This issue is very easy to reproduce, just create a blank image with 2 colors in Photoshop: #3b46ad and #3c1f3d. Open it in LRC or ACR, then change the purple hue slider. Observe that it affects the blue hue as well. On the other hand if you change the blue hue slider, it does not affect the purples.