Bugs in TypeORM 0.3.0

Bugs in TypeORM 0.3.0: a task in LegoFlow-SWE (Harbor dataset). Several regressions from 0.2.x were introduced in TypeORM 0.3.0 that affect core functionality. Below are the observed issues, expected behaviours, and minimal reproduction examples.

The task

Several regressions from 0.2.x were introduced in TypeORM 0.3.0 that affect core functionality. Below are the observed issues, expected behaviours, and minimal reproduction examples.

Part of Lego-X/LegoFlow-SWE.