Custom field not visible in admin panel

Hello,
for some reason my custom field is not visible in admin panel in order details.
The field is set to be visible everywhere in the fild options.

Any ideas?

In Dev console there is only something like that:
DevTools failed to load source map: Could not load content for chrome-extension://liecbddmkiiihnedobmlmillhodjkdmb/js/content.js.map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME

DevTools failed to load source map: Could not load content for chrome-extension://liecbddmkiiihnedobmlmillhodjkdmb/js/intercom-link-expand-loader.js.map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME