Deleting a restriction is creating a new restriction in the TR window

[abhisheksaikia]

While trying to delete a wrongly added restriction (no_u_turn) in iD, through the TR window, ended up creating a new restriction (only_u_turn) in addition to deleting the old one without any visible warnings.

osm Change file:

<?xml version="1.0" encoding="UTF-8"?>
<osmChange version="0.6" generator="iD">
   <create>
      <relation id="-8" version="0">
         <member type="way" role="from" ref="417310791" />
         <member type="way" role="via" ref="573973104" />
         <member type="way" role="to" ref="573973107" />
         <tag k="type" v="restriction" />
         <tag k="restriction" v="only_u_turn" />
      </relation>
   </create>
   <modify />
   <delete if-unused="true">
      <relation id="8155829" version="1">
         <member type="way" role="from" ref="417310791" />
         <member type="way" role="via" ref="573973104" />
         <member type="way" role="to" ref="573973107" />
         <tag k="restriction" v="no_u_turn" />
         <tag k="type" v="restriction" />
      </relation>
   </delete>
</osmChange>

[bhousel]

Thanks for reporting @abhisheksaikia - I noticed in the screenshot that the turn arrow didn't even turn blue (only_u_turn). Maybe the bug happens when the user can clicks very fast - is this what you did?

I'll check the code and try to reproduce the issue - we might have to block clicks until the graph update has caught up..

[srividyacb]

@bhousel

Area in OpenStreetMap

• click the way in iD
• Delete no_left and no_u turn-restriction
• While deleting no_left - first click it changes to only_left (blue) and second click deletes the TR.
• While deleting no_u - the first click (in single action) both only_u and deletion is happening (no visible change in colors).

(in gif you can notice, deletion of no_u doesn't change to blue but directly deletes but doesn't give indication of TR creation)

Follow the steps as per to reproduce the problem

[bhousel]

Awesome thanks @srividyacb and @abhisheksaikia for the detailed report 👍

[bhousel]

Thanks this is fixed now..
The issue was that we were only allowing the only_ to go in one direction along the bidirectional connecting road. (I guess I was thinking about oneways the day I wrote that code).

Deleting the no_u restriction would cycle to an only_u restriction, but this restriction was ignored because of the bug, causing the turn arrow to turn green (even though that only_u was silently created).