On first load of the General Availability page, the prev/next month buttons do not work properly

[radishmouse]

General Availability prev/next month arrow buttons do not work on first load

Clicking the arrow to go to the next month skips a month. Clicking the arrow to to go the previous month does nothing.

This only happens on first load of the General Availability page.

Note: Clicking the arrows to go from month to month act normally after the initial click.

To Reproduce

1. Visit a user's general availability calendar
2. Click the arrow to go to the next month or the previous month

Expected behavior If it's currently October:

• clicking the arrow to go the next month should go to November.
• clicking the arrow to go the previous month should go to September.

Actual behavior If it's currently October:

• clicking the arrow to go the next month goes to December.
• clicking the arrow to go the previous month does nothing

Screenshots

Reloading the page, then clicking the arrow to go to next month skips a month: Screencast_20241030_170002.webm

Reloading the page, then clicking the arrow to go to the previous month does nothing (until it is clicked a second time): Screencast_20241030_171220.webm

System (please complete the following information):

• OS: Linux
• Browser Version: Firefox 131.0.3 (64-bit)

[devmount]

Good catch, I'll take a look at this.

[devmount]

@MelissaAutumn I analyzed this and found that this is very likely a Qalendar bug happening only at the end of a month apparently. It happens in both our Qalendar views (dashboard and booking view). If the booking view schedule starts at Nov 1 all is working fine. If it starts at Oct 31, the bug strikes.

How do we want to proceed on this? Should we file a bug report? Or should we find a work around? Or both? I remember there was a discussion about ditching Qalendar / Calendar views, so maybe it's not worth the effort.

[devmount]

I just saw that Qalendar is no longer maintained, so we'd have to find a workaround.

[MelissaAutumn]

That's fun. I think there's some plans to redo the booking page. I've forked it a while ago with intention that we'd maintain / theme it as needed / fix any bugs we find though: https://github.com/thunderbird/qalendar

So if there's a low-effort fix we can apply that would solve this that would work, but if it's more than an hour, we should verify if we're planning on removing qalendar soon.

[devmount]

Alright, I'll see if I can fix it. We should still verify the Qalendar removal imho.