extra line breaks and broken list items in editor

Hi kriesi-team,

when I try to edit pages in the editor all list items are breaking apart and showing a strange behaviour. It seams that the editor is adding extra line breaks / extra tags. You can see the problem in this screenshot:

It should look like that:
http://grab.by/KiM0

But after saving the page and re opening the editor it looks like that:
http://grab.by/KiM4 (editor view)
http://grab.by/KiLk (text view)

Even when I remove the list, build up a new one and save the page: After opening the editor again the list items are all broken. Sometimes I also experience extra line breaks in the visual editor on different locations (outside a list, normal paragraph).

What I tried:
– Adding this remove_filter to my functions.php
remove_filter( ‘the_content’, ‘wpautop’ );
remove_filter( ‘the_excerpt’, ‘wpautop’ );

– changed the textblock.php exactly as described here (in the parent and the child theme):
https://kriesi.at/support/topic/how-to-avoid-rendering-extra-line-breaks/

– installing tinymceadvanced and switched “stop removing p tags…” on and off again.
– Cleared cache, switched browser (chrome / firefox)

Nothing works!

I built the page with wordpress 4.2.x and updated to 4.3 a couple of days ago. Enfold Version is 3.2. I don´t know if the problem occured after updating to the current wordpress version or if it was also before the update. I built up the content under 4.2.x without problems and created dozens of pages really nicely with the Enfold editor. So maybe it has something to do with an incompatiblity between WordPress 4.3 and Enfold 3.2. But I´m just guessing. Weird stuff.

Please help, kriesi-team!