Issue Summary

If you update a image with a high resolution as background of a board in Safari, when the image is loaded it correctly displays the image, but refreshing the page will downsize the resolution, showing an image with a lower quality. 

Correct resolution:

Resolution shown after refreshing the page:

However, if you access the board from an incognito window using Safari, another supported browser, or the app, the image is shown with the correct quality. The problem only occurs with Safari in a non-incognito window.

Steps to Reproduce

1. Open Safari
2. Access a Trello board
3. Upload an image of high quality as the background
4. The image will be shown correctly, refresh the page, and the quality will drop.
5. Accessing from an incognito window with Safari, other browsers, or the app shows the image with the correct quality.

Expected Results

The image should be shown with the correct quality in all supported browsers.

Actual Results

The image is shown at a lower quality.

Workaround

None.