Glossiness/Roughness slider doesn't work if "use roughness" gets ticked

[Twist]

In the new update 7.00.04 the roughness/glossiness slider stops working if you tick "use roughness". Doesn't work either if you tick it off. You will have to create a new material to get it working again. and then the same bug happens again if you tick on/off.

Can anybody reproduce this?

[hermit.crab]

No issues here. You have set a non-black reflection color, right? If the issue persists, send a video or scene.

[Twist]

It may have been a bug. Installed it again and it works fine now. Thank you