I have documented that when I move from two different comptuers, if I have set the tracking to make the text just fit in a text box, when I move to a different system it might no longer fit. This has been happening when I set tracking to -15. Then I open on a different systems and a word is gone. If I set the tracking to -16, the word comes back. Has anyone else seen this? We have a variety of designers that might work on the same page using both Windows and Mac systems.
Always use clean paragraph styles, never based on Normal nor Basic Paragraph Style.
Dont tend to reach for Tracking first. Instead, in your paragraph style, set
9,3,4,1, off off off
And set Justification ( your real tracking)
Set Kerning Method to Optical
Therefore stop manually tweaking your text with Tracking values manually applied. Delegate that to InDesign.
Having said that, moving between 2 computers that have maybe two different versions of the same font might flow it differently. It can be hard to see differences in versions of fonts, but at any rate, resorting to manually applied Tracking values that are so exact is much like micro-managing. You create more problems than you solve.