Overview
When using Velixo NX, the Excel Undo functionality works inconsistently or not at all.
As a result, users cannot revert their worksheets to a previous state.
Cause
This behavior is due to the way the OfficeJS API is implemented – making a large part of the API calls that Velixo NX uses also clears the Excel Undo stack.
Workaround
There are no currently known workarounds; however, Microsoft has been aware of this issue for a while, and a fix is currently accessible in public preview. Once the fix is released fully, it will enable improvements for this issue.