@Damage
I got the square ones a few years ago and they kept on dropping from the network. In the meantime, a few firmware updates later I migrated to HA and now they are rock solid, don’t know if it’s due to consolidating Ikea, Hue and Aquara Zigbee networks into a single ZHA mesh or the firmware getting better, but I suspect that it’s due to a single optimized mesh instead three colliding Zigbee networks.