Of my two numbers Ive not seen these issues. Im using a 286 on one line and a zoom on the other. Both their message indicators lights seem to be working correctly.

Id too like to see the red light on my desk phone come on eventually but not a big issue for now. Although I am going to ask around about the zoom just to see if its possibly a setting.

But just to let you know that in some cases VMWI is working right.