Bonnet opening

[s999sws]

2016 981.
On two occasions now ,after a drive, I’ve got home to find my bonnet had popped open and was on the safety catch. The display on the dashboard didn’t come up but when I use the button inside the car to open it then the display immediately flashes up.
Any ideas?
SWS

[bridggar1]

Accidentally blipping the keyfob?

[s999sws]

When the key is in the ignition the boot
and bonnet buttons are disabled.