NO BUG: Loop meta query condition

Hi if I query mysql DB at phpmyadmin it seams field (ACF type DATETIME) value is empty string (IS NULL returns nothing)
image
If I metaquery the loop at bricks, doesn’t matter if LIKE or NOT LIKE + empty meta value field, allways return all posts:

Is it a bug, or must I query some other way ?
Related post at Bricks comunity FB group:

Hi,
ACF creates two entries:

The meta key that has a value assigned starts with an underscore: _meta_key. Then it should actually work as expected.

Hi, Yes there is second entry with “_” at start:

Still don’t understand how can I metaquery this to be part of the loop…

For those looking for a solution. This works: