I don't understand clipping in Lightroom.
From my understanding, shadow clipping is displayed as a white triangle on the left of the histogram and as blue zones on the photo. Similarly, highlight clipping is displayed as a white triangle on the right of the histogram ans as red zones on the photo.
However, on some photos, Lightroom displays blue and red zones, but the white triangles are not shown in the diagram. Here's an example of a fragment of a photo which clearly displays a relatively large zone in red, and a tiny zone in blue (the top of the antenna):
For the same photo, the histogram is shown like that:
View > Show clipping is checked. If I reduce the blacks or raise the whites, then the triangles appear.
When I hover over the red zone, some but not all points are displayed R 100 G 100 B 100 % below the histogram.