Weird Problem GO_BLOCK in WNBI

Hello, I have a strange problem with my form code.

I have following type of code in When-New-Block-Instance. I am simplifying here for explanation purposes.

This is on Forms Builder r12.2.1.19 running on Database 19c on Linux 7.

Step 1. Input Parameters in a Search box (this is a control , non-database block).
Step 2. Click Find button to fetch data based on step 1.
Step 3. When Find Button is clicked - The When-New-Button-Pressed trigger execute a go_block statement. We will say go_block('Block1') and then issues an execute_query built in.
Step 4. On Block1, after fetching data, we have When-New-Block-Instance Trigger