October missing from calendar widget on date columns

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Environment Setup

F8 Sample app running on an Ubuntu 16.04 server with Ubuntu nodejs pacakges.

Browsing from either Safari or Firefox.

Steps to reproduce

• Find a date column (e.g. Agenda class, startTime column)
• Select an existing value
• Using the left/right (prev/next month) buttons on the calendar widget try to find October
• October is skipped (Month goes from Sept to Nov, and Nov to Sept).

Logs/Trace

Note: If you get a browser JS error please run npm run dev. This will provide source maps and a much more useful stack trace.

Not a hard error. Issue is with UI.

I would like to extend this bug report and politely request that it's urgency be raised, because in the global app config (as opposed to the data browser), date fields are only editable via the calendar widget. Thus while you can work around these UI issues in the data browser by manually editing the date string, there is no such opportunity in the app config. Given that October is missing, this is causing problems with scheduling certain things.

Calendar Widget Issues:

1. As noted, the month of October is missing entirely - a rather pressing concern at this time of year.
2. Selecting a particular date results in the day BEFORE that date being entered as the value. So for example, selected September 30th at 23.59 would result in September 29th 23.59 being entered as the value.
3. The number of days in a month is not guaranteed to be correct. E.g. 31 days shown for September, though September has only 30.

Aside from having the widget work correctly, it would be beneficial to have the option to enter the date value manually in the config (like you can in the data browser) and to have the system validate its format.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.