I temporarily added myself to the global-bot group for testing expiring global groups. XTools does not display the expiration of that in the global rights changes table:
I am expecting to see something similar to what it does for local groups:
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Yay! Great to see T153815 has been resolved :) XTools does not automatically know about the new gug_expiry column, but this should be easy to fix. Thanks for filing the task.
I'm making this a priority on my personal to-dos, but FYI I probably still won't get to this for another week or two.