Weird bugs with the editor

First off, total novice here!
I’m currently working on making a timeline website for a certain anime story, with pictures and text. https://aottimeline.wixsite.com/home

However, for the past week, I’ve been encountering some weird bugs with the editor where whenever I’m loading a page, one out of three times, random spaces that I don’t want between elements of the timeline will appear, forcing me to load back a previous version of the website because it would take me too long to put everything back where it should be. Here’s an example (I guess I should warn for Attack on Titan anime spoilers) :

Some other bugs include the inability to use the little handle with the arrow to slide elements up when I select multiple elements, now I have to associate them. And even then it doesn’t always work as it should, when I try to slide it, nothing happens and then I can’t move any elements anymore, they just go back to their previous place.

Does anyone else have these problems or an idea of what could cause them? I thought it could maybe be because of the number of elements on the page but then again, I never had these problems before this past week.

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Will do, sorry for that!