Push button log press changing brightness on 0.15.0-b5

Hi. I set up a push button.
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If I leave long and double at 0
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a long press changes the brightness from current to max. A second long press dims it from max to min. If I replace 0 with a non-existent preset, the brightness is not changed, and the button works as expected.

If that’s expected, it should be documented, otherwise it’s a bug that might need fixing.

Undocumented but expected.