Error moving nodes of residential area in 2.6

[alex11123]

https://www.openstreetmap.org/edit#map=18/50.92584/-2.30736
Starting today I can no longer move nodes of a certain residential area (linked above). Other residential areas I can move nodes. When trying to edit it just shows a stop sign then snaps back on mouse button release.
Other users on the forum have confirmed the error is present for them as well. There is no obvious reason to block it being moved.
thanks in advance
chrome,windows 10

[bhousel]

I agree that it looks like a bug.. I'll try to see what might be causing the node move from being blocked. As a workaround, you can hold down the alt/option key while moving nodes.

[bhousel]

ok, so I figured out why the code is not happy, and it's because r3148989 (the landuse=residential) has an outer ring that touches its inner ring.

They touch here at lng,lat [-2.3042359, 50.9270863]:

I agree that iD should still allow you to move the edge nodes in this situation, since the moved node isn't what caused the problem.

[bhousel]

I relaxed the check a little bit for multipolygon rings.. Now you only get the nope cursor when you try to drag an outer across an inner.. (It's hard to tell what is going on here, but the outer is a landuse=residential and the inner is a landuse=retail)

I tried to make a simpler version to demonstrate what was wrong, but iD won't let me 😆