WC 3.0 updated to Select2 v4 which is not compatible with v3 used in Sensei.
Documented here https://github.com/woocommerce/woocommerce/wiki/2.6.x-to-3.0.0-Developer-Migration-Notes#select2-version-4
Reported here: https://wordpress.org/support/topic/sensei-conflic-with-3-0-0/
@dwainm
Going to include #1777 into Sensei v1.9.13
Can you please send me this update so I can fix my site? Thanks alot.
Most helpful comment
Going to include #1777 into Sensei v1.9.13