Theme not applied properly on assignment with a Google attachment

[r58Playz]

Describe the bug

When I open an assignment(let's say a science project) with a Google Doc/Sheets/Slides/Jamboard/etc. that Schoology has made a copy for me, the theme is not applied properly to parts of the screen.

Steps to reproduce

Open an assignment with a Google Doc/Sheets/Slides/etc. that Schoology has made a copy for you.
Observe that the theme is not applied to the navigation bar near the top and the "Assignment | My Document" text.

Expected behavior

The theme is correctly applied to the navigation bar and the "Assignment | My Document" text.

Screenshots

Theme is applied:

Theme turned off by using theme off button:

^{_{P.S. The navigation bar's text is hard to read, don't know if it is a problem with Schoology+, but it would be nice if it's fixed!}}

Additional context

Add any other context about the problem here.

Platform

Chrome 94.0.4606.71 (Official Build) (arm64) on Mac 11.6