if the file contains many clipping planes and several of them are active. Or if you’re actually looking in Elevation at a Clipped view seeing several clipping plane symbols oriented the same way - it is IMPOSSIBLE to know which of those clipping plane(s) are active. Like in this image:
Could the actually active clipping planes be marked somehow? Would help a lot. Maybe just making the symbol outline a bit thicker? Or making on of the squared opaque?