With "Snap to Point" on, the cursor doesn't change colour to indicate a snap to anchor will occur
I just switched to AI 2017 from AI 2015 and i'm noticing this straight away. In preview mode and artwork modes. Turning on Smart Guides helps in some situations but in other cases it fails to identify a Snap when an anchor is around. Snap to Point should work independently of Smart Guides anyhow.
Harsh Tiwari commented
I assume you are using Illustrator 2017.1.0 Release
I have tried this scenario and cursor changes its colour from black to white while snapping for my case.
Try deleting the preferences of Illustrator at location:
Users/<username>/Library/Preferences/Adobe Illustrator 21 Settings
Users/<username>/Library/Application Support/Adobe/Adobe Illustrator 21
C:\Users\<username>\AppData\Roaming\Adobe\Adobe Illustrator 21 Settings
and then try the scenario
Also, did you experience the issue on certain zoom level or certain mode? If yes, please indicate.If possible, kindly share the link to screenshot/screen recording of the issue, to help us understand the issue better.