'undefined' printed in place of loading indicator on thumbnail

[ghost]

What is the expected behavior?

I should see loading indicator on thumb items when loading takes perceptible amount of time.

What is the current behavior?

Currently I see text 'undefined' on thumb items which load long enough.

What are the steps to reproduce?

• Set gallery background to white.
• Point thumbnail source to slowly responding resource or use 'Slow 3G' network preset.

Known workaround.

Add loading indicator svg via .g-loading class backound-image.

[MurhafSousli]

@kamisbox I have pushed a beta version, can you test it and tell me if the issue has been resolved. I also prepared a stacbklitz