Section 11: Constraints to Barrier only works manually (XML edit)

[korn1e]

Section 11, step 2. Drag a constraint from the left side of cameraType to the barrier
it only works by manually edit the XML file

Add following line to EditText id cameraType:
app:layout_constraintStart_toEndOf="@+id/barrier5"

Note: adjust barrier id with yours (mine "barrier5")
I'm using Android Studio 3.6.1

[Yog8482]

same problem i have faced with barrier while performing
"Drag a constraint from the left side of cameraType to the barrier"

[BobAllan123]

I also have this problem in Android Studio 4.0.1