Both nlog and log4net have the concept of rolling log files, where based on a certain condition (file size, time of day), the log file is archived, and a new 'current' log file is created.
I assume in this case the 'current' log file is renamed, and a new 'current' file is created, with the same name, e.g.

Web.Server.SignalR.201511180800.log
Web.Server.SignalR.201511180830.log
Web.Server.SignalR.log <-- current

However when I tail the 'current' log file, TailBlazer stops tracking changes after the rollover has occurred.

Another non-modern application (baretail) does this correctly. It would be great if TailBlazer could also do this.