In the video demo below you’ll see how requests are being launched for extensions that aren’t associated to the page (extension.js).
The problem is maybe not the fact that the requests are being done.
Biggest problem is that the skeleton for our extensions are being shown while that request launches, which is not ideal because since they aren’t added to the page, it causes screen flashes.
Happening on my end too, need help 
Hey @muchisx, is this still happening? Do you have an idea of when this first started? I’ll be happy to look in to this for you.
Hi @KyleG-Shopify After debugging we realized this was happening on Dev inspector, where it seems the like the extensions dev tools loads all extensions regardless if they were added or not through the editor.
This hasn’t happened in Production anymore as of today