The conversion of secondary language to primary language is not reflecting into the Copilot Studio interface.

Question

The issue is related to Language support into the copilot studio,
I select my Primary language as English (en-US), and add a secondary language Spanish(en-US).
When I try to change the bot from English to Spanish, it reflects instantly, however when I try to change the bot from Spanish to English, it is not reflecting.

As you can see in the Screenshot although the language is selected as English(en-US) but neither the studio interface nor test interface changed from spanish to english