add my two cents here:
from another thread: https://tri.be/support/forums/topic/conflict-with-woocommerce-subscriptions-plug-in/
I was asked to give the theme, I’m not really using a woocommerce specific theme, just an adjusted version of a regular wp theme called tfingi (tfingi.com).
But the issue doesnt really have to do with the theme, I mean, I can simply deactivate wooCommerce subscriptions plugin and the wootickets admin works fine. enable woocommerce subscriptions and the dropdowns get ‘stuck’ and enabled like I show in the screenshot here http://y.kidw.ai/QgiQ