Under Settings>>Templates click on the equivalent template of the phone that the issue occurs. Have you made any changes in there?
Also under Settings>>PBX do you see the Lunch and Business Trip texts in the "Rename Available 2 and Out of Office 2 Status"?
Hello,
In Firefox this problem have every Extension, in Chrome or Edge everything is fine.
This is not problem with templates, because we have some extension only as Voicemail without Phone.
and thank you for reporting this. Please note that this is a confirmed issue that will be fixed in the next service pack. For now please use chrome as a workaround and keep an eye out for the next release.