WMS and WMTS tutorials have longitudinal artifact after intial loading #214

Description

When the WMS and WMTS tutorials are first opened a longitudinally aligned artifact appears. Once the globe is moved it disappears. I was not able to recreate the artifact by moving the globe.

WMS:

WMTS:

Steps to Reproduce

1. Open the WMS or WMTS tutorials

Expected behavior: [What you expect to happen]

No longitudinal line

Actual behavior: [What actually happens]

Longitudinally aligned artifact which disappears after globe movement.

Reproduces how often: [What percentage of the time does it reproduce?]

100%

Operating System and Version

Nexus 9 - Android 7.1.1