Ambient light on 2nd switch

[DerDom]

I am not sure whether this is a software issue or whether the Shelly Dimmer 2 hardware just does not allow my use case. Maybe someone could point me in the right direction, tough?

• To power the Shelly, it is connected to L and N,
• 8 dimmeable LED spots are connected to Shelly's O and N,
• 1st switch connects L to Shelly's SW1 (it is programmed to power the LED spots up to 100%),
• 2nd switch connects L to an LED table light and to Shelly's SW2 (I try to program it to power the LED spots up to 25%).

My idea is to use the LED when the table light is switched on alone spots (at 25%, as an ambient light). However, when I turn on the spots with the 1st switch to 100%, the 2nd swith is not recognized by Shelly, anymore. I assume SW2 powers the table lamp a bit, since it starts glowing. This seems to have an impact on recognizing the state of the 2nd switch, as well.

Do you see any way to get this setup up and running? Is it possible to change the software or is it just a hardware issue?