Ignition 7.3.0 (b460)
Groups of at least some combinations of objects seem to have border problems. If you draw a closed object using the line tool, then place a label in it, and group the two, the line object will lose any border on the south and east sides. Draw an object with horizontal/vertical east and south sides for best effect.
Group two such line objects- no problem. Add a label to those two- east and south disappear. I have seen similar issuse grouping a couple of line objects with a level indicator.