This happens because the ruleset parsed here doesn't get a .debugInfo attached to it, and this if block gets executed because the ruleset of a nested @supports isn't .root.
(I'm not familiar enough with the code to know what the right fix is here, hence not a PR).
Using 2.7.2 in Chrome:
This happens because the ruleset parsed here doesn't get a
.debugInfo
attached to it, and thisif
block gets executed because the ruleset of a nested@supports
isn't.root
.(I'm not familiar enough with the code to know what the right fix is here, hence not a PR).