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I've solved my problem (express key couldn't customize with PS2018) in this way:
- additionally ps2017cc install to ps2018cc via Adobe Cloud/Apps
- got the ps2017.app back, which I previously deleted, when it still worked
-switched to wacom driver settings (actual version in comb. with macOS)
- deleted the ps2018.app in the entries
- configured so express key for a test and it work's now fine
- deinstalled ps2017 via cloud deinstaller
- wacom entry of ps2017.app still there and finalized my setuo op express keys

Finally!
Thank you Adobe! This last update, the rotation has returned to normal operation! 🙂

Alt+Backspace problem can be fixed with Apssistant plugin. Disable Alt menu hotkey, and now Alt+Backspace will work as usual, no need to double tap. Works for Alt + Num Key to change the brush smoothing too. Also kinda fixes the rotation with Wacom touch ring. The canvas rotates, but not as smoothly, as before. Pressing Right Alt while using the touch ring enables the rotation to work normally. 

No. I installed Ps CC 2018 update and tried rotating artboard with PTH-651 touch-ring running Wacom driver 6.3.23-4 on macOS 10.13.1. Hence the old driver as the latest one introduces a nasty bug.

Anyhow I'm pretty certain that this broken rotating feature is Wacom's bad. It hasn't been working for me on a Mac in a long time, and hitting keyboard R has obviously always worked.

The Update allowed my pen pressure to come back, but it comes and goes as it pleases. The program spazzes not when this happens.

I'm trying to see was could probably trigger it but nothing has been consistent.

CC 2018 defaults to windows ink and breaks pen pressure if you turn it off.

You need to make the PSUserConfig file for 2018 to get your stuff working again. 

Just type this in:

# Use WinTab
UseSystemStylus 0

Save the file as a plain text file named PSUserConfig.txt, and save the file into the Photoshop settings folder: C:\Users\[User Name]\AppData\Roaming\Adobe\Adobe Photoshop CC 2018\Adobe Photoshop CC 2018 Settings\

Restart Photoshop and it should work.

What this does is tells Photoshop to use the device and its drivers instead of Windows Ink.

Adobe just launched a new update, and now the Rotate tool finally works in wacom intuos.

Although I work with a Wacom Intuos Pro, I encountered some issues with Ps CC 2018 as well. Most important: pen pressure and brush shape dynamics don't work at all ..! Wacom driver is latest version 6.3.25-5.
In Ps CC 2017 everything is okay. So I decided to uninstall CC 2018 and roll back to cc 2017... To bad Adobe. And you can't blame Wacom, since their drivers worked so far in older CC-versions.