There are a couple of bug reports about this problem.
Issue 465660: Cursor functionality broken in Ubuntu 14.04 since 41 is perhaps the most promising. Its last entry says :
version 43 works fine, just install google-chrome-unstable
Issue 357347: Mouse cursor stopped turning into a pointer while hovering over links has several workarounds that may not pertain to your problem :
- disable Chrome hardware acceleration
- disabling Synergy server
- this happens with Photoshop CC 2014 in the background (the window is open, just behind Chrome). Hiding Photoshop solves the issue.