If absolute focuser means that it can move to specific position directly rather than moving in or out then Celestron's focuser is absolute.
I second everything Ron said above. A few versions back it worked fine and displayed the activity correctly as a short bar. Then it broke and now focuser activity is displayed only when session is read from file. Also, as it appears to me, all the bars start at the session start and end at different times when each focus procedure actually ended. So they effectively overlap and look like one long bar.
As a quick guess, can it be that the live session does not show the focuser because there is no dedicated INDI device? It goes via the mount device.

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