Yes, I worked on this image over the weekend after updating to Studio 1.6.8. Didn’t have any issues or problems. So far, I’ve only used Adjust, B&W as plugins through Studio and played around with Impression a bit. Everything worked as usual per my normal workflow.
For Adjust and B&W Effects, I used the plugins, as that’s all there is since I don’t own the ProPack.
But when I played with Impression, I used the Impression adjustment and the HSL adjustment, both without issue. Again, so far, those are the only things I’ve used since updating. I also almost always use Impression manually, i.e. I have the left panel hidden and work the adjustment sliders from scratch. So I’m generally not aware of or know anything about issues regarding the left panel.