When a panel is relatively "thin" in a layout, that steals space from the dynamic toolbar. So, space there is at a premium. But at this time, the width of the scripture-entry field on the left remains static when the panel is made thinner and some of the toolbar tabs disappear (and the "More" dropdown grows).
Please allow the entry-field width to SHRINK, maybe to 1/2 of its default width, when the panel width is reduced, BEFORE the other tabs start disappearing.