[BUG] "Order By <computed_colum>" in SQL query doesn't have effect.

[MauMau666]

Version
5.0.15 with LiteDB.Studio 1.0.3.0
5.0.21 in VS project

Describe the bug
"Order By <computed_colum>" in SQL query syntax doesn't have effect.

Code to Reproduce
[OK] SELECT importo, importo + 20 as plus20 FROM fattura order by importo asc
[OK] SELECT importo, importo + 20 as plus20 FROM fattura order by importo desc

[DOESN'T WORK] SELECT importo, importo + 20 as plus20 FROM fattura order by plus20 asc
[DOESN'T WORK] SELECT importo, importo + 20 as plus20 FROM fattura order by plus20 desc

Expected behavior
Order By clause should have the same behaviour with both kind of columns.