I have been trying to find an answer to this but have had no luck. My company uses WebEx meetings all the time. When I am sent a WebEx invite and click on the .ics file, it puts it on my calendar at the wrong. For example, the invite might say 8:30am-9:30am but when it goes on my calendar it's from 9:30am to 10:30am.
The Timezone Supported checkbox is checked in settings.
I have read that this is a bug due to daylight saving time.