A colour pick clicked in the Composition panel before the viewer had a frame
(still rendering on a background thread, or a readback pending) sampled nothing
but was used up, leaving the colour unchanged. The click now leaves the
eyedropper armed, as the text colour eyedropper already does.
timeline_colour_eyedropper_samples_the_comp clicked without waiting for the
frame and hit this in about one run in four; it now waits for the frame.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>