CI4 .env file connecting to multiple databases not working

I've had a similar problem where I was able to define connection to the second database, but the convenience model methods (such as $theModel->findAll() ) not working on models based on the 2nd database.

Consider:

Code:

$modelBasedOnDb1 = model('model1'); // using $db1
$results1 = $modelBasedOnDb1->findAll(); // works fine

$modelBasedOnDb2 = new ModelBasedOnDb2();
$modelBasedOnDb2->db = $db2; // despite this
$results2 = $modelBasedOnDb2->findAll(); // produces some error like: no such table (whatevertable) on"DB 1"

(I used pseudo-names to describe the problem)

I ended up merging 3 databases in a single database because of this problem.
(Happened with CI 4.0.4 - I haven't tried again with CI 4.1.x)

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