@srgbnd I also notice this similar issue when you are in same tenant.
Steps by which the Short URL work
- Switch to tenant A
- Generate Short URL … https://kibana.tools/goto/d3b31d631231c6d08391aa554688718c?sg_tenant=A
- Try to reach above Short URL … got same error - 404
- Switch to tenant B
- Try to reach above Short URL… and it works now.
- Thus something to do with switching tenant