Lightspeed inverses query logic

Lightspeed ORM inversed the boolean logic in our query, which results in incorrect query results.

The following Linq query part is executed as the SQL query shown below.

.Where(Function(x) x.ShownDate.HasValue _
                    AndAlso x.ShownDate >= fromDate AndAlso x.ShownDate <= toDate _
                    AndAlso String.IsNullOrEmpty(x.Number) = False

This is the generated SQL query:

WHERE
((((([Document].[ShownDate] IS NOT NULL AND [Document].[ShownDate] >= '01.01.2016 00:00:00') AND [Document].[ShownDate] <=      
'31.12.2016 00:00:00') AND ([Document].[Number] IS NULL OR [Document].[Number] = '')) AND ((([Document].[Type] = 1 OR [Document].[Type] =   
5) OR [Document].[Type] = 14) OR [Document].[Type] = 6)) AND [Document].[DeletedOn] IS NULL)

The String.IsNullOrEmpty = False part gets converted to ([Document].[Number] IS NULL OR [Document].[Number] = ''), withouth the False being regarded.