I was able to resolve the issue be deleting all of my Wacom setting and application configuration.
I now have to confirm everything from scratch.
If you are having the same issue don't hesitate to contact me if needed.
Unfortunately this has not helped us. We are using the Wacom intuos pro (with the latest drivers) and windows 7. We have now had to revert to photoshop 2017 until this issue is resolved.
I'm having very similar issues with latest Intuos Pro PTH-660 on Windows 10 (Creators Update), PS CC 2018 and latest Wacom drivers. Custom settings just don't "stick", sometimes after a shutdown all settings have vanished (then restore from backup).
Show/Hide Express View doesn't work at all. It drives me nuts with it's unwanted visual intrusion. I've uninstalled/reinstalled driver v: 6.3.25-5 but no avail.
Sometimes the tablet just stops. Disconnecting/reconnecting the USB cable often wakes it up again. Bluetooth is a dead loss. In spite of a strong, steady BT signal, it is totally erratic and dysfunctional.
I observe after 15 years as a Wacom user, it looks like Wacom, Adobe, Microsoft & Apple just don't bother talking to each other.