Two lines of icons in the HTML editor toolbar

Maybe margin-top:35px!important; -> margin-top:35px; ?

Please include the non-minified versions also, it is a WP.org guideline.

Could you also align the font size dropdown?
margin-top:4px;

I found the fix: disable “Enable full-height editor and distraction-free functionality.” in the menu of displayed boxes of edit post…
Other solution is to allow fullscreen…

I have same issue, even I have more rows of custom buttons so Im not seeing more lines than you… I think its CSS issue and it should be easy to fix it.

<div id="ed_toolbar" is overlaping the edit code box…

Sounds like a duplicate issue to https://www.ads-software.com/support/topic/fix-for-top-of-editor-being-cut-off-from-view?replies=6