According to the source those drones have been used for an attack against a Russian airfield in Kursk, where four SU-30 and one MiG-29 were damaged. In addition, a S-300 and two Pantsir were targeted as well.
https://twitter.com/Tendar/status/1698013456400515359
Although this video was posted a couple of days ago, it is worth further analysis.
In the video, the drone is blanked out.
There are 2 explosions, most likely from 2 separate drone attacks.
Each explosion shows pellets impacting the target area.
Most likely, these are tungston pellets, similar to those used in the M30A1 GMLRS Alternate Warhead, pictured below:

The last 10 seconds of the video shows close-ups of the impact damage caused by the pellets.
My guess is these were the drones used on the IL-76s.
The pellets penetrated the wings of the IL-76s. The aircraft that were refueled leaked, which fed the fire that destroyed the aircraft.
The aircraft that were not refueled sustained damage but were not destroyed.
Sources say that the others cannot be repaired. The SBU confirmed that the cardboard drones were used by a covert group inside Russia
More attacks will likely follow
See # 40 - possible rumor, maybe not.