Hi,
I had the same issue and was able to resolve it by doing the following:
1) In Application Options>Drawing tab I uncheck background updates.
2) In drawing document I opened it with defer updates.
3) Navigated to page with the issue.
4) IN Doc Settings I uncheck defer updates AND changed memory saving mode pull down to NEVER.
After the drawing finished updating the issue was gone.
Hope it works for you too.