I just tested this on WP 3.4.2 multisite with subdomains and don't see a problem. You are scrolling down to click the Update button?
The role defs are stored separately for each site. Is that your issue?
I just tested this on WP 3.4.2 multisite with subdomains and don't see a problem. You are scrolling down to click the Update button?
The role defs are stored separately for each site. Is that your issue?