use-lane can occur in roundabouts as well

CHANGELOG.md

@@ -27,6 +27,7 @@
   - Changes from 5.4.1
     - Bugfixes
       - #3032 Fixed a bug that could result in emitting `invalid` as an instruction type on sliproads with mode changes
+      - #3085 Fixed an outdated assertion that could throw without a cause for concern
 
 # 5.4.1
   - Changes from 5.4.0

src/engine/guidance/post_processing.cpp

@@ -265,7 +265,8 @@ void closeOffRoundabout(const bool on_roundabout,
         BOOST_ASSERT(leavesRoundabout(steps[1].maneuver.instruction) ||
                      steps[1].maneuver.instruction.type == TurnType::StayOnRoundabout ||
                      steps[1].maneuver.instruction.type == TurnType::Suppressed ||
-                     steps[1].maneuver.instruction.type == TurnType::NoTurn);
+                     steps[1].maneuver.instruction.type == TurnType::NoTurn ||
+                     steps[1].maneuver.instruction.type == TurnType::UseLane);
         steps[0].geometry_end = 1;
         steps[1].geometry_begin = 0;
         steps[1] = forwardInto(steps[1], steps[0]);