Metabase behavior is not consistent for 'Enable in-depth database analysis' flag after upgrade

OS : Win 8.1 Pro
Current Metabase : v0.25.0
Upgrade To: v0.25.1
Metabase DB : PostgreSQL 9.6.1, compiled by Visual C++ build 1800, 32-bit
Data DB :PostgreSQL 9.6.2 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-11), 64-bit

Although, I had off ‘Enable in-depth database analysis’ selection, after upgrade to v0.25.1, Metabase started to make analysis and this action has caused to block queries on ‘Data DB’. It should keep this selection after upgrade.
This event was noticed the next day of upgrade.

Note 1: Our tables in DB are huge and only with limit option we can access them
Note 2: The flag was still off, if you went to ‘Databases’ but the behavior was not consistent with the flag.

An example of queries that Metabase run and created the problem :

SELECT avg(char_length(CAST(“demo”.“table1”.“column1” AS VARCHAR))) AS “len” FROM “demo”.“table1”