In Firefox, when navigating back and forth in the weeks, the calendar view jumps to 00:00, requiring users to scroll back to their previous time. This can be confusing and disrupts usability.
Moreover, with a larger calendar size selected, most events of a typical day are out of view, necessitating constant scrolling to access relevant information.
Ideally it should just keep the same view so say I am currently seeing events from 06:00 to 15:00 then navigating to the next week should still show the time-frame 06:00 to 15:00.
This seems to be an issue only for Firefox, at least I haven't encountered it elsewhere. Might be a good idea to verify that this is the case, for other browsers as well, when tackling this.