UI: redo panel would still start zoomed in at times

source/blender/editors/interface/interface_region_hud.c

@@ -268,6 +268,8 @@ void ED_area_type_hud_ensure(bContext *C, ScrArea *sa)
 
 	/* Reset zoom level (not well supported). */
 	ar->v2d.cur = ar->v2d.tot = (rctf){.xmax = ar->winx, .ymax = ar->winy};
+	ar->v2d.minzoom = 1.0f;
+	ar->v2d.maxzoom = 1.0f;
 
 	/* Let 'ED_area_update_region_sizes' do the work of placing the region.
 	 * Otherwise we could set the 'ar->winrct' & 'ar->winx/winy' here. */