Freeze UI when uploading Image

Steps to reproduce:

Run the project;

Open the specific uploaded image on attachments;

Also this Image is being loaded asynchronous as you can see on the current code, so it shouldn't freeze the UI.

This will sometimes freeze UI thread and causes UI items to get stuck (such as busyindicator on the project).

I made a video with the problem on display.

I also tested this on macOS Catalina and didn't find any problems but I did find that the image take some time to upload but nothing major, it probably works as intended.