Menu bar clock is locked and not accessible on Big Sur beta 1 and 2

[matsuda0707]

I installed Big sur beta 1 (2 weeks ago) and 2 (today) on my macmini 2018, but the menu bar clock tab in the system environment setting panel. But the Menu bar clock is locked and not accessible as shown in the attacjhed snapshot;

The menu bar clock and its setting items are all greyed out and not accessible.
this problem occured in Beta1 and also Beta2.

 

[rcoden]

Same with me, however besides not being able to change any of the default settings, no issues on my Mac, i.e. default works fine for me.

 

[matsuda0707]

I also checked this problem in the Big sur on Virtual Player, this problem also occured!
However, in case of update from macOS Catalina 10.15.6 beta 3 to Big Sur, the menu bar clock is accessible, and change the items such as time format,etc.