Problem with call next scene

Hello, I am running an installation with about 100 devices using a Conbee II on a Pi 4.

I have a group with 2 lights controlled by Kobold dimmers, and 4 scenes with the different combinations of the 2 lights on and off. I use a single Gira Switch button to go from one scene to the next, using “call next scene” in the switch editor.
When I cycle through the scenes by pushing the button, I can see in the Phoscon app that it goes through the scenes 00 - 11 - 01 - 10 - 00 correctly.

However when it goes from 01 to 10, the lights do not change (i.e. stay at 01). When I tap on the 10 scene on the app, the lights change just fine with no delay, so the scene is there correctly.

It seems that when I call the next scene, the signals occasionally (and repeatedly) get lost.
Is there a way to avoid this behavior?

Thanks for your help!