Topic: Data not shown in Google Sheets

When I open a spreadsheet from my Google Drive none of the data is visible. I can see the values of any cell in the formula bar, but not in the spreadsheet itself. If I add data in a blank cell, the new data is visible, but if I close, then reopen the spreadsheet that new data is also not visible. The spreadsheet displays all data properly when I open in from Google Chrome, including the new data I added when the sheet was open in Epic. Any idea what is going on and how to fix it?