Airdrop not sending/receiving pdf files
Hello community,
I'm experiencing problems trying to transfer pdf's via Airdrop.
They can be sent from the iPad/iPhone and received by the iMac; but when trying to send them from the iMac to the iPad/iPhone I can hear the notification, yet nothing else happens (=no dialog offering to open the file using any apps).
I have followed all the common troubleshooting steps; all three devices are on the same wifi network, and all are updated to the most recent OS versions.
Any clue as to why this is happening specifically to pdfs?
Thank you.
iMac 27″ 5K, macOS 10.15