Photo 2.3.1 and 2.4.0 beta 2256: Levels out of gamut clipping in individual channels does not work by default when pressing ALT

[AP-]

I remember seeing reported somewhere with a partial fix, but cannot find it now, so not sure if it was reported as a bug or discussed as an issue on the forum, but reporting (again?), as still present in production and beta:

 

Expected behaviour: When adjusting levels sliders in individual RGB or CMYK channels, holding ALT while dragging should show clipping.

What actually happens: No clipping is displayed.

This works fine in Master.

Partial fix: In Master, set black level to non-zero value, 0.001 works. Set white level to 99.999%. Go into any channel now: slide white level or black level sliders while holding ALT. Clipping is now displayed as expected.

[MEB]

Thanks @AP-. Reproduced here. I'm logging the issue.

[AP-]

Thank you!

Since you're going to be looking at the Levels code... could I suggest a feature request? Say, something like pressing ALT+2/3/4 to automatically select the channel rather than going into the dropdown?