Thanks for the info. Unfortunately the Slack message looks correct from our side. I even tested the exact same blocks in a couple other workspaces and confirmed they worked for me. This makes me think one of the following is happening:
Something funky is happening with your specific slack client/app. Could you try refreshing/restarting? Would also be useful to ask a teammate to test it out.
There is a Slack bug - although unlikely
Something in the Vanta workspace is blocking this behavior - I'm not aware of any workspace settings that could do this, but calling this out just in case you're aware of something
Let me follow up with you so I can see what you're experiencing.