🇳🇵Nepal @mukun

Actually issue is with body field when we are configuring multiple body field whether it is with paragraph or not.

Problem: When we are using single body field ckeditor dropdown button will appear if toolbar has more plugins enabled.

but if we enable multi field for body that time table tag <table></table> will added and downdown button feature is not added for toolbar which leads to expand the toolbar to the right side.

Simple Solution: add below css on your custom module that will work like magic.

.ck.ck-toolbar.ck-toolbar_grouping>.ck-toolbar__items {
    flex-wrap: wrap !important;
  }