Thank you for reporting this issue, I tried it at my end and I am able to reproduce this issue. And it seems that the issue is specific to macOS only.
We have logged a bug for the issue, I would request you to try a workaround, go to Preferences>Performance>deselect "use graphics processor", restart Photoshop and then try to use surface blur.
Let me know if it helps.
I have the same issue. Disabling the GPU does not fix the issue on my MacBook Pro. All the other Blur filters work fine with the GPU on.
Same issue here. Already reported details in another thread or two...
Anyone have any news?
Sorry this is happening, we are aware of the issue and have logged this issue as a bug, our Engineering team is working towards a fix, I will update once we have a workaround/resolution for the issue.
This issue should be in fixed Photoshop 19.0.1 which was just released.
If you don't see the Photoshop update in your Creative Cloud application, then click in flyout in upper right corner and choose "Check for App Updates". You may refer Available updates not listed for Adobe Creative Cloud applications
January 19, 2018
I want to use this "Smart Blur" filter, is the bug not fixed yet?
I have Adobe Creative Cloud and I check on update sand I am up to date but this Smart Blur filter is still greased out?
Don J J Carroll
How do we get this Smart Blur "greyed out" issue solved? Is anyone at Adobe looking into this. The papers to be an issue several months old and no solution yet?