Field label unchanged after add new default language

The issue is not reproducible in 10.2.6.
Functionality is working as expected adding screenshots for help.

@kalpanajaiswal try change label from "Содержимое" to any word

Proof — https://www.youtube.com/watch?v=AbDZF67ksKU

I tried to change "Содержимое" to another the word.
Value is getting updated on "/admin/structure/types/manage/page/fields/node.page.body" page.
Even success message it printing right value.
But its not visible on other pages like "/admin/structure/types/manage/page/form-display",
"/admin/structure/types/manage/page/display",
"/node/add/page".

Its still showing the old value instead of new.
Looks like issue now.

I replicated the same behavior in Drupal 9.5.11 as well.

Fixes are made on on 11.x (our main development branch) first, and are then back ported as needed according to our policies. Also, 10.2 is in security mode now.