Why images freeze in the Opencart admin?

Question

opencart

ocStore Version 1.5.5.1.2 + vqmod
The problem is localized in the Chrome browser. The rest are all good.
When working with the admin panel, after a certain number of manipulations with the product photo, all images in the admin panel cease to be displayed at all.
At the same time, the page does not stop loading endlessly ... If I stop loading the page, I get the following picture:

The product showcase is displayed correctly.
After a random time (an hour or more), everything starts to work normally, but as soon as I change the photos of several products, it starts to fail again.

In config.php the paths are correct and relative. Image file names do not contain spaces or Cyrillic characters.

Answer 1

If the pictures are loaded and not 404, I had a joke that adblock (ad blocker) blocked, the picture was loaded, but due to the fact that there was a forbidden phrase in the name (for example, banner, or ad *) - they were not loaded. Check?