Odd, I can’t find the original post….
Here’s an example:
When I save the project, everything is fine: the “icons8-call.png” file for the button is correctly linked and displays in its frame and the right panel. I save, I quit…. Later I reopen the project and (3 times in a row) :
https://lakazlabe.re/video/
(Preliminarily, the video doesn’t open with Safari. Use Firefox or Chrome….)
So the Sitely time-machine has become very temperamental and the beach ball is often there…
There are some “artefacts” that are only present in the preview (especially Safari, but not exclusively). In production, these problems resolve themselves. Therefore, it’s necessary to publish to my server each time just to be sure.
I have lots of problems like that. And when I revert to version 6.1, everything goes back to normal… I work on a MBP M1Max/Sequoia.
I ended up having a real love-hate relationship with Sitely. (Is there a psychoanalyst here? 
)