Mobile Chrome just updated to v64 for Android devices.
The new ad blocker seems to be working for those affected.
keyplyr
4:59 am on Feb 5, 2018 (gmt 0)
Thanks for choosing Chrome! This release prevents sites with abusive ad experiences from opening new windows or tabs without your permission. We've also included stability and performance improvements.
keyplyr
4:02 am on Mar 11, 2018 (gmt 0)
There is a setting to block ads in Settings > Site Settings.