Initially, I tried having a Mapped value of what I want to display on the button and thought that was causing the issue; nope, still got the same error.
Is this an error with {{self}} or the button type in table columns? Either way, I second this feature request where we can put event handlers to Table Action Buttons
This is actually a bug we're working on I added a temporary bug fix to your org while we work on a more permanent fix. Can you check to see if it's working now?
Hi @jocen! We pushed a fix for this bug (and removed the temporary fix). There shouldn't be any changes on your end, but I wanted to check in just in case to make sure the table is working as expected.
Let me know if you notice any unexpected behavior and I'll loop in our engineers asap.