Ghost buttons bar

Good morning everyone,

Yesterday i installed with the new tool “easy installer” the last version of /e/ on my Samsung galaxy S8.
At the moment I did not found big issues but at least one minor as I can use the system without trouble.

I kinda have a ghost buttons bar at the bottom of the screen (See the picture attached). Is it a problem? Can I remove it in a way?

Thank you for your help!!

IMG_20210215_163956|375x500 IMG_20210215_164000|375x500