Timetables are displayed incorrectly if 12 hour time format used

But it works in Firefox?

Yes, and it works with Chromium 6.0.472.55 (58392) Ubuntu 10.10. Will check on newer Chrome when I can.

Can you please also attach the active timetables? And a screenshot with incorrectly rendered events if any? What precisely is wrong in this screenshot?

Oh, and if you could also add screenshots of the same pages rendered in Firefox, that would be great!

Here is a screenshot where an event was scheduled to begin at 14:50 and end at 16:40. However, it is displayed on the calendar at the incorrect time, and is visually slightly overlapping the times in the timetable. Also, there's a giant 2:50 slot wedged between 8:10 and 9:36.

Here is a screenshot, where two events, one created to go from 10:18 to 10:58, and one created to go from 13:00 to 14:00 are displayed at the incorrect times, and are placed within a large 2:50 slot on the timetable.

A screenshot of "Timetable schema default"

The solution/clarification/new summary:

Calendars are rendered incorrectly and unpredictably when military time is _not_ used when setting up a timetable.

This is not a browser bug.