full trace (interface to interface) not available if using circuits between sites

[Gheorghita]

Environment

• Python version: 3.6.8
• NetBox version: v2.10.4

Steps to Reproduce

1. Create 3 sites in different regions with devices
2. create 2 circuits
3. connect one device from site A to Site C via Site B
   

Expected Behavior

Trace from interface 1 (site A) to interface 2 (site C)

Observed Behavior

trace breaks at the first circuit.

Works as expected if I don't use circuits and directly connect ports from different sites. (trace from the first picture is the result)

[jeremystretch]

This is expected behavior and is specifically called out in the v2.10 release notes: Circuits are considered endpoints of the cable path. This change was made to fix several bugs which had plagued the cable tracing logic for a long time.

[jeremystretch]

FYI I've opened #6071 to address this as a feature request.