Jumping fields in Form editor. What is the root cause of this annoying glitch?

Hi community,

since 10 minutes I try to save a simple Form in the editor. And I can´t. Cause every time I click the save 2-3 fields are misaligned.

I have the following form which is pretty standard (except a few decoration elements, but these are the only elements that actually stick at their place...)

Jumping fields are a know issue in Form and LifeCycle editor. But normally you just need 1-2 additional attempts until you successfully save a form. As I don´t create Forms and LifeCycles very often, the glitch was some kind of tolerable. But right now I made around dozens attempts to save the above form. And just fail over and over again.

Does anyone know what causes this issue? Thanks!

Angela