Fenix 7 sapphire solar cobalt blue - buttons not working - vibrate without reason - unresponsive

Hello Garmin community,

I recently bought a Fenix 7 sapphire solar cobalt blue (v10.44) and the first time I went paddle surfing, I’ve got undesirables symptoms:

-long press on buttons not working
-vibrate without reasons
-tempest alarm raised
-pressing on lock buttons result on lock and instantly unlock
-hard reset do not help

I sent it back to the vendor and got a new one (v10.46)

Once gain at the first use on paddle surfing same symptoms appear. Some symptoms upload on YouTube xt0f29

I will send it back to garmin this time.

MY QUESTIONS are:

Do several users have the same king of issues ?

Is it suppose to work on water surface sports ?

Isn’t a production line issue to have 2 tile the same behaviour after first use above sea ? I mean perhaps a bad serie.

I’m very disappointed and cross my fingers to get the new one work as intended.

Thanks for futures comments
Xt0f29