Shelly support group (English Version), Why does Shelly 2.5 instructions state that the two lines should be bridged if they are bridged internally

Shelly 2.5

Shelly support group (English Version) Any idea about what could happen to this shelly 2.5

Shelly 2.5

Shelly Dimmer2, Relay Switch, WiFi Smart Home Automation, Compatible with Alexa & Google Home, iOS Android App, No Neutral and Hub Required, Wireless Light Switch, Smart Appliances, Smart Dimmer

Shelly Plus 2PM - 2-channel Switch/Roller Shutter - Android/iOS application Botland - Robotic Shop

Shelly support group (English Version), So I have got one Shelly (2.5) device that has been acting weird

Shelly support group (English Version) Any idea about what could happen to this shelly 2.5

Shelly 2.5 vs Sonoff DualR3 - NotEnoughTech

Shelly 2,5 - Shelly USA

Shelly Pro 2 - 2-channel with power metering WiFi 230V driver - Android/iOS app Botland - Robotic Shop