Uncommanded Theme switch

[EvansJa]

I've had an odd issue with all three of my instances since upgrading to Yokohama. 

While I am working in a workspace view, selecting related links causes by instance to switch from my company's theme to the standard Polaris theme. 

Duplication steps:

• I have a PA dashboard as my homepage.
• One of the visualizations is a single score of my open SCTASKs.
• Click that and see the list.
• Open one of the SCTASKs - everything is fine
• Select the preview icon for the RITM - everything is fine.
• Select "Open Record"
  • RITM opens
  • Theme switches on its own
• Go back to the SCTASK
• Refresh
  • Theme switches back

This is not a huge problem, but it's annoying.

[JP Marshall]

I have a similar issue on my instance as well. This started happening after we upgraded to Yokohama. I haven't found the fix for this yet.