Theme experiments add CSS definitions which apply to core elements, which can change over time. For example, supernova removed the tree for the thread pane and CSS selectors for the tree no longer work.
I therefore suggest to force theme_experiments to include a strict_max_version (during the submission process).
Theme experiments add CSS definitions which apply to core elements, which can change over time. For example, supernova removed the tree for the thread pane and CSS selectors for the tree no longer work.
I therefore suggest to force theme_experiments to include a strict_max_version (during the submission process).