Layout separated into 2 distinct parts

Hello,
I've just noticed a peculiarity that seems abnormal on the map decay.

As you can see on the images below, the layout was split into 2 distinct parts.
In order to finish the map, I had to go back to my HO to pick up blink (nothing to worry about, but is this normal?).

I don't know if this information will be useful, but just in case :

Map: Decay (T15)
Content:
- Breach
- Expedition
- Map boss (T2)

Screenshots:
https://postimg.cc/ykn8WTzj
https://postimg.cc/jwXkb2G8