Unable to add new term in open Termset (Only in Detail Pane)

[SYLV1]

Hello !

I've created a site column based on a opened Termset in a site collection (Site collection Term group)

- I am site owner ( Teams site collection )

- I am termset owner 

- I can add new terms through standard interface and gridview

But.. Nothing happens when i'm trying to add term via "..." option in Detail Pane. 

Any clues about this issue ? 

Thank you 

[#2 · Accepted solution]

Hi community.
Finally found the issue with Network error 'Specified argument was out of the range of valid values. Parameter name: lcid)

- You cannot add a new Term if your profile language is not available in termsets languages.
- It still is fine with old interface though.

After setting my profile language i can add new terms