The SLDDRW Flat Pattern View "defaultSM-FLAT-PATTERN" is incorrect.

I've seen this in the past and now seeing it again in 2014 thru 2019.

The only way I found to fix it was to open both the SLDDRW and the SLDPRT... and in the SLDPRT set the configuration to the "defaultSM-FLAT-PATTERN", go back to the SLDDRW  (and Ctrl-Q if it does not auto update).

Does someone know if this is a known issue a another fix?

Thanks.