Reproduction steps:
1. Open the attached project named "Case_1138263"
2. Select the "CM FreeLook1" camera
3. Observe the game view

Expected result: Frame guidelines are drawn only for the active Rig
Actual result: Frame guidelines are drawn for two Rigs at once

Reproducible with: 2018.3.10f1, 2019.1.0b8, 2019.2.0a9
Could not test with: 2017.4 ( lack of a Package manager )

Reproducible with package versions: 2.2.0, 2.2.7, 2.2.8, 2.3.1, 2.3.3
Not reproducible with package versions: 2.1.13

Notes:
When using 2.1.13 version of the package, colored frame guidelines are drawn only for the active Rig (Track_1138263_V2). Frame guidelines for the other Rigs are greyed out