DS18B20 problem with parasite mode

I am using the original DS18B20 parasitic connection from Dallas and it happened to me that one sensor went out (water, short circuit) and the other sensors stopped working. How is it possible?
What code do you use?

The cable (lan cat5e) is 4x1 meter long and I use a 4K7 resistor.

How is it possible?

The OneWire bus is a bus system, so if one of the bus members blocks the bus the others will fail too (of course).

The cable (lan cat5e) is 4x1 meter long and I use a 4K7 resistor.

Post a wiring diagram of that setup. Where did you place the resistor?

Avoid parasite power mode if you can, the 3 wire method is much more solid as every
chip can have its own decoupling capacitor (I'd recommend this).

"4x1m long" means the sensors spaced out every metre?