Heating issues for Yeelight LED Colour Bulb?

Hi,
I am having issues identifying Problem with the recently purchased Color Led Bulb. After some time of operation it turns off when on maximum brightness. When on a lower one - the bulb produces flickering.
I doubt it is a normal behaviour. Can it be a heating issue? How to solve it or is it a defect bulb?

Could you put the bulb in an open space and power on it to max brightness? If you still find the bulb being turned off automatically, then it would be a defect one.

Did it - turns off after some time. App still shows the bulb as online and is not controllable from app anymore

Could you contact the retailer and ask them to change one for you?

Yes, already requested a refund. Pitty though.

We also feel very sorry, will feedback this information to our quality team.