Strange, because I'm using PS CC 2018 on Mac 10.11.6 and the R.I.s are working as usual.
That's interesting. With the latest Canon Pro-10 driver download?
I've found it just seems to be the two glossy profiles, which of course have been the two I've been primarily using:
Canon PRO-10 <GL><PP> 1/2 Photo Paper Plus Glossy&Gold
Canon PRO-10 <GL><PP> 3 Photo Paper Plus Glossy&Gold
I've tested the following, all with the most current Canon Pro-10 drivers:
macOS 10.13.4Photoshop CC 2018 – Does not work
Photoshop CC 2017 – Does not work
Photoshop CC 2015.5 – Does not work
Photoshop CS6 –
Does work!macOS 10.11.6Photoshop CC 2018 – Does not work
Windows 10 (whatever the latest build is)
Photoshop CC 2018 –
Does work!If I do an Edit > Convert to Profile, all of the intents are available.