That error only shows up on my local server. 

Here is what showed up on our live server. I am talking to the WPE support about this. 

After telling them that the problem only occurs when I activate SP and they said it is obvious the SP is causing the problem even thought it is on their platform. I contacted them 3 times about this and this was the final moment where I realized they can’t help because it is beyond their support. 

Caching should not be a problem because I am facing the same issue on my local server where I don’t use caching. 

Do you have any suggestion what to do?
Is there a way to avoid SP loading JS files while editing images?

Please go to the media edit page with the problem and then view the source code. You should find that there are absolutely no SP JS files loaded. If you find one being loaded from the SP foider then let us know what it is please.

We take great care to only load necessary components wherever possible.

That last error in the list I believe is IE specific by the way.