Timescale settings are One tier, Units Minutes, Count 1, Default labels (time) and alignment.
Tasks are Auto scheduled, ASAP. Standard Calendar. No constraints
This occurs with any new file.
I would post a screen shot here if I could!
I have just created a new file, added a few task of durations of 1, 2 and 3 minutes, with these setting and the Timescale is showing
¦ 08:00 ¦ 08:01 ¦ 08:03 ¦ 08:04 ¦ 08:05 ¦ 08:07 ¦ 08:08 ¦.....
This then effects the length of the displayed task bar.
The effect particularly seems to kick in as the relationship between task are set.
Thanks