Content that does not work in Windows offline use of Electron app

There is a lot of content that either does not work offline or points to documentation which has embedded videos that require internet connectivity.

This list is not exhaustive:
Nothing (perhaps unsurprisingly) in the Live Coding section works.
In Games section, Reaction Time brings user to local copy of webpage with video that cannot be displayed without internet connection, same with Magic Button Trick, same with Salute. The documentation for these seems thorough enough that a user would still be able to complete the project.
Nothing in the Turtle section works without internet. See screenshots below after clicking on the Scanner project.
Some content in the Science section also heavily relies on videos for instruction - see screenshot below which is from the Plant Watering project.
In the Music section, the Guitar project leads to documentation with many embedded videos for instruction, which does not seem usable at all without internet.

Expected behavior
It should be more obvious to the user what content requires internet connectivity or is optimal with internet connectivity. If a tutorial (like the Scanner project) is unavailable without internet, it should not create a project in the workspace.

Screenshots
Add screenshots to help explain your problem. You can copy paste the screenshot in the github report. The .gif screen recording is very useful as well.

Desktop (please complete the following information):
Windows Offline - Electron App