Thanks so much for reaching out about this issue you’re seeing with your slider.
It looks like you may have found a bug. I’ve notified our team of the issue and they are investigating further now. I’m so sorry for any frustration this may be causing.
There are a couple of workarounds here that you could use to get you moving forward.
You could remove the div wrapping the content you’re wanting to edit out of the slider and make your changes and then drag it back in.
The other option is to make the div containing all of your slide content a symbol, then place that symbol on another page and edit the content there.
I know this isn’t ideal, but it would keep you moving forward. As soon as I hear more from the team someone will back back in touch with more information.