Oh3 basicui using switch as button

Setup, Configuration and Use Migration
1

Hi,
in oh2 it was possible to use a switch as button with mappings=[ON=“Switch on”]
In oh3 it is shown correctly but does not switch on the item.
Workaround is mappings=[ON=“Switch on”, ON=“Switch on”], this is not shown correctly, but doing the thing.

Any ideas? Is it a bug?

Thanks
Tobias