Brief flicker of "no image" border around the displayed image

[humky]

I installed HomeGallery using the quick start instructions: https://docs.home-gallery.org/install/index.html#quickstart waited for a few hours for previews generation. Now when I open the gallery from mobile browser on my phone (using local ip:port), I have these kind of flickers when viewing the images. (attached video). It also happens on desktop (the host machine), but so quickly that you can only sometimes see the white 1 pixel border but without "no image" icon. I tested in Chrome and Kiwi Browser they behave the same.

https://github.com/user-attachments/assets/ad52affd-b0b4-4641-918b-4bc6dcd949f4