I've noticed after the update to Android Studio 3 (but it could be happened also before and I didn't noticed) that some deprecated methods are not marked any more with a line-through. For example:
I'm on Ubuntu, Android Studio 3.0.1 just updated. I checked inspections in the settings, and it's all enabled. I also checked that the code style/formatting is correctly set-up for deprecations (but it had to be, given the last line of the example is correctly marked). It's not something project-related, since I tried on a freshly created project.
What can cause this?