Data Transformation Filter - Null Value Issue

Wappler Version : 4.0.2
Operating System : W10
Server Model: NodeJS
Database Type: Postgres

Expected behavior

I have a multi query which returns 1 row, and 5 columns. I need to output only 4 columns. 5th column is need just on SA level.
So I used Filter Columns step to filter out the 5th column.

image887×552 21.8 KB

The output expected here is the 4 other columns, with the same vaules as returned from the query.

Actual behavior

One column has null. That gets turned into {} when filtered.

Outputting the query returns null correctly, as shown in screenshot above. But filtered data is incorrect.