Omg, #GA4 keeps breaking things left and right... Today's complaint is that regex no longer properly works in GA4 or through Looker.
If you want to get it to work, your beautiful regex now has to create exact matches...
... According to one reddit post I've found, this has been going on for a whole month...
...and I now hope that the thousands let go by Google didn't include the analytics team on fixing these bugs.
So, 4 months to go until a forced transition on a buggy product? Yikes...