Airbus has fixed most of its jets affected by a software glitch after a technical problem grounded thousands of its planes, but its shares tumbled on Monday after it discovered a separate issue with its fuselage panels.Airlines around the world cancelled and delayed flights over the weekend after the French plane manufacturer ordered immediate repairs to 6,000 of its A320 family of jets, more than half of its global fleet.Airbus said on Friday that analysis of a recent incident had revealed “intense solar r ...