It is not possible to use a design library that contains ACSS variables.
If I edit everything at the ID level (without using variables) then there is no problem.
I created one section using ACSS (I used variables), I tried to add the section to the design library and load it on another domain. Another domain has ACSS installed.
If you need access to both domains, let me know.
WordPress version: 6.3.2
Cwicly Plugin version: 1.3.3 (the bug is also present on older versions)
Automatic.css Version 2.7.1
PHP Version 8.1.24