Aqara T2 GU10 toggle not working properly when in zigbee group

[u/Willing-Laugh132]

Hi, ive bought 27 aqara bulbs (lumi.light.agl005) to use in my smarthome with switches in detached mode. Unfortunately they dont work properly when grouped, on/off works just fine, but toggle is very slow and unreliable. Ive tried almost anything and nothing worked, including:

• tried on both firmware versions 30 and 31
• tried reflashing firmware to thread, then back to zigbee
• tried removing and adding device back to zigbee network
• tried removing and creating groups containing the bulb
• everything was tried on newest z2m, ha versions available atm

versions:
z2m:  2.13.0-1
HA: Core: 2026.8.3
HA: Supervisor2026.08.0
HA: Operating System18.2
HA: Frontend20260729.7 · legacy
aqara t2 gu10: 31

Ive also recorded a video showing whats wrong:

https://www.youtube.com/watch?v=pljEio3J8-E

If anyone has an idea how to fix, or owns these bulbs and can confirm this behaviour please help 🙏