Comment by oreilles
When your trackpad worked in a previous OS version and suddenly don't in the newest, that's called a software bug. Not a trackpad malfunction.
When your trackpad worked in a previous OS version and suddenly don't in the newest, that's called a software bug. Not a trackpad malfunction.
Trackpad malfunction may be hardware, or it may be software, but in either case it more clearly specified the issue than simply "software bug".