A press on a slider's value held past egui's click time ended with no click on
release, so the field it had opened closed again (the field "flashes and
vanishes"). Any release now keeps the field open; a sideways drag of more than
a few points on the value scrubs it instead (as along the track, a tenth with
Shift, one undo step), as in Lightroom Classic.
Sources: own design.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>