What you can try is to set back your screen-zoom back to → 100%, in 50% of all cases it is the changed screen-zoom the Wix-Editor has an issue with.
This is a well known bug since decades! I started about 4 years ago, i called this effect the → “moving-elements”. Each time you save your design-setup inside Wix-Editor → elements are moving like magic → but this is not a real magic → it’s a mess!
So to make sure it do not happen that often, do not use the screen-zoom when you are working on Wix-Editors! Always use 100% of screen-zoom.
The only thing you can do in this case, is to contact the Wix-Support, describing them your issue in detail, so they can maybe this time figure out the real issue for this bug…
Good luck!!!