nhufford on "[Plugin: Simple Calendar - Google Calendar Plugin] Decription not Limited"

I'm trying to limit description to 50 characters. I set it up as follows, but still shows full description.

[title]

[when]
[location]
[description limit="50"]

[link newwindow="yes"]See more details[/link]

https://wordpress.org/plugins/google-calendar-events/

The limit is for number of words not for number of characters:

http://docs.simplecalendar.io/event-template-tags/

I tried limiting to 20 words on all calendars (displayed is a grouped calendar) and the entire description is still shown.