periodically, components stop behaving as units, and start behaving like ungrouped objects
after maybe some component deletions, or other routine operations, Sketchup 2020.0.373, will stop treating components as single unit, and start treating them like ungrouped geometry.
the problem is easily fixed by saving, exiting and reopening the same file. everything is back to normal.
this has happened more than once, seems to be a daily occurrence. happens to all components in the file at the same time.
the event started when i inserted a valid component, and afteri applied the scale operation to it. immediately, the behavior started.
in the video, I click on a number of objects. the select tool selects a single face in any number of components. note, all the objects on the screen are components.
i drew a polygon and a line segment inside a component to see if the geometry would merge, and it did not. So the behavior seems to only affect the select tool?
as soon as i finished the little drawing, and going back to the select tool, the behavior stopped.
You are using the Quad Face Tools selection tool, it selects quads within groups and components.
The main giveaway is the normal selection tool isn’t highlighted.