ESP32 still connects to repeater even when its signal is very weak

[Jami17]

My ESP32 module was connected to a WLAN-repeater (Fritz-Repeater).
Now I moved it back near to the router (Fritzbox) but it still connects to the far away repeater, even that the router signal is much stronger. The result: slow & difficult traffic.
Why doesn't ESP32 select the stronger signal?
An Android does not show that behavior.
Can I do anything about it?

I'm using: ESP-IDF v4.0-dev-1136-g28f1cdf5e-dirty

[JoeThibodeau]

You can use RSSI to determine which connection is strongest and control connectivity in your code.