Neogaf : Multiple reports of joycon issues in switch previews.

[TomaTito]

Faelco said:

TomaTito said:

Not sure what he is doing. But if you slot the joycon into the rail, there is a notch that locks it physically.
Only way it would fly away like that was if it didn't reach that notch or if it is broken.

You have to press and hold a release button whenever you want to detach the joycons.

Yeah, that's what someone said on Gaf. But he just "tap" the Joy Con and it comes off, while saying that it's getting worse and worse. Maybe it's just his console or he did something with it, but it seems the "lock" isn't effective enough or can be quickly damaged.

If it's broken then warranty should fix it