This item has been identified as an outstanding known issue. A workaround is provided until the issue is officially fixed.
When editing a cell before clicking enter if the “Show Changes” button is clicked Excel will crash.Excel will immediately re-open but no functionality will work unless closed and opened again.
Finish editing the cell before clicking “Show Changes”
If this workaround is not suitable in your use case, please contact Support at email@example.com.
Internal Reference: XLSX-2858