[Bug Report][3.7.19] Bug on the v-calendar option weekdays in some locale cases (fr)

[FirestarterXavier]

Environment

Vuetify Version: 3.7.19
Vue Version: 3.5.13
Browsers: Chrome 135.0.0.0
OS: Windows 10

Steps to reproduce

Use Vuetify with en locale set to 'fr', or 'es' or 'it', ...
Remove Sunday on the weekdays list param
Set first-day-of-week at value 0 (in french it's 0 = Monday : first day of a week)

Expected Behavior

Days headers has to be "L, M, M, J, V, S"
Rows on the calendar has to be continuous on V (Friday) & S (Saturday)

Actual Behavior

Days headers are good
Rows on the calendar are not continuous on V (Friday) & S (Saturday)

Reproduction Link

https://play.vuetifyjs.com/#...

Other comments

Example on April :
friday (V) is 04-04 but saturday (S) is 04-06 (Sunday date is shown)
friday (V) is 04-11 but saturday (S) is 04-13 (Sunday date is shown)
...etc

[J-Sek]

@FirestarterXavier, Could you verify with v3.8.2?

[FirestarterXavier]

Thanks @J-Sek !
With Vuetify 3.8.2 (with PlayGround test) : weekdays and first-day-of-week params doesn't work at all : the calendar didn't change - these params looks like broken since the 3.8 version :/
Even on the official doc : https://vuetifyjs.com/en/components/calendars/#type-week

[J-Sek]

I can see something is fishy.. When changing first-day-of-week between 0 and 1 weekdays shift, but days do not move. This does not happen for locale en.

weekdays prop is ignored, you are correct. There is heavy construction going on but I will check if anything could be done about it.. next week hopefully.

[KaelWD]

Set first-day-of-week at value 0 (in french it's 0 = Monday)

0 is Sunday: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getDay

Remove Sunday on the weekdays list param

You've removed 6 which should be Saturday