Blurry slides on firefox

[davidrojo]

Describe the bug
Sometimes, the slides are blurry, but on change browser size the image shows correctly.

To Reproduce
Seems that only can be reproducible In firefox, the slides are all blurry, not just the first one. Resizing a bit the browser (or opening dev tools) the image loads correctly (but closing dev tools again the image is blurry again).

Screenshots

Blurry image:

Correct image (just resized a bit the screen)

Desktop (please complete the following information):

• OS: Ubuntu
• Browser Firefox
• Version: 115.0.2

[davidrojo]

I think this is related,

The browser downloads the same slide 3 times, one is canceled, the second one downloads 95Kb, the third one downloads 242Kb but looks like served from cache.

[amg-web]

confirm same bug with firefox and BBB version 2.7.1 too

[pedrobmarin]

Sometimes the high quality slide image can take too long to load so its thumbnail is used as a placeholder. Looks like something changed for Firefox.

[otteresk]

I experience the same problem with version 2.7.8.
A workaround is to switch slide to fullpage view and then (browser) reload the page.