Track is not shown correctly with multi user

[christaikobo]

Describe the bug
This is not related to #793.

I am using chrome 146 to test.

I have 3 users, A, B and C.

B and C both share with A.

In A's view, his own trip's track is not shown, B's trip is not show. Only C's trip is shown.

And C's trip is shown in default golden color, despite the fact that all 3 have set color to blue.

To Reproduce
Steps to reproduce the behavior:

1. Create 3 users with location data
2. Share 2 users with another.

Expected behavior

1. 3 users' trip should all show up with lines.
2. They should either have the same blue color as defined in user management, or user's own track should show as blue color whereas other users' track should have automatic different colors assigned.

[dgraf-gh]

Yes, the problem is that the last one wins at the moment. Currently working on it.