I have an assembly drawing where I can click on a BOM line and the associated item in the graphics view will highlight.  Then I click on another item from the same BOM and it won't highlight.  Normally I would think that I had a "dynamic highlight" setting turned off but that's not the case and in any event it wouldn't explain it working for some items but not for others.  Highlighted item turns purple as shown below.  Anybody seen this before?