Good to know that it fixes the issue now. We are scheduled to release our next official release, i.e., Aspose.Cells for .NET v19.7 in Downloads module and on Nuget respo. before the end of next week or so. This release will also include the functionality of the fix (Aspose.Cells for .NET v19.6.5). Please note, we only publish official releases on Nuget repos.
Moreover, you may use this fix (Aspose.Cells for .NET v19.6.5) as an official release, it will behave like an official release. The fix includes all the functionality (full fledged) of previous version v19.6 plus enhancements and other fixes.