Gearbox warning

I have an MY21 140TSI LE SKoda Octavia Estate with the 2 litre petrol motor. After two chilly (5C) nights the amber gearbox warning cog appeared at the first start in the morning. After driving a short distance then stopping the engine and re-starting the warning disappeared. Since then I have started many times over three days and driven 1000km without the warning appearing again.

Do I have a problem or can I ignore it as a glitch?