Shelly Binding

Add-ons Bindings
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1313

Hi,
I encounter a strange behavior with a Shelly i3. Only 1 switch is attached to input 1. When pressing the switch, I get the following results in the log:

shelly:shellyix3:68c63afa9d2a:status1#button triggered SHORT_PRESSED
shelly:shellyix3:68c63afa9d2a:status2#button triggered SHORT_PRESSED

Does anybody know, why input 2 receives a trigger when there is no switch attached?

I do use org.openhab.binding.shelly-2.5.8-SNAPSHOT version of the binding.

Thanks