No ATT packets with ubertooth-btle

Question

I'm trying to sniff the Bluetooth connection between my phone and a smart light bulb by typing in the terminal: $ubertooth-btle -f -t @MAC -c smartbulb.pcap. The problem is that there's no ATT packets. I only get ADV_IND and SCAN_REQ packets while I'm changing the bulb's color with my phone.

Version information Ubuntu 18.04

Ubertooth tools version (ubertooth-rx -V): libubertooth 1.0 (2017-03-R2), libbtbb 1.0 (2017-03-R2)

Ubertooth firmware version (ubertooth-util -v): Firmware version: 2017-03-R2 (API:1.02)