I apologise for the delay in getting this resolved. Crayons is going through some changes and we are getting ready to release version 3 soon.
We realised that the earlier behaviour of showing a pop-over on hover of icons was a non-standard method and have decided to remove it all together in the new version. We will be handling icons a bit differently in v3. To follow the same path, I have pushed a fix to remove title for icons in v2 itself.
No change is required from code on your side. You should no longer see the title from v2.13.3 onwards.
Hope this resolves your issue!
Please let us know if you face any issues.
Thanks