diff -U2 -r /var/lib/copr-rpmbuild/results/openmw-git/upstream-unpacked/Source0/openmw-master/apps/openmw/mwmechanics/aiwander.cpp /var/lib/copr-rpmbuild/results/openmw-git/srpm-unpacked/openmw-master.tar.bz2-extract/openmw-master/apps/openmw/mwmechanics/aiwander.cpp
--- /var/lib/copr-rpmbuild/results/openmw-git/upstream-unpacked/Source0/openmw-master/apps/openmw/mwmechanics/aiwander.cpp	2026-06-29 00:03:31.000000000 +0000
+++ /var/lib/copr-rpmbuild/results/openmw-git/srpm-unpacked/openmw-master.tar.bz2-extract/openmw-master/apps/openmw/mwmechanics/aiwander.cpp	2026-06-28 00:21:35.000000000 +0000
@@ -225,7 +225,4 @@
             return true; // Don't bother with dead actors
 
-        if (!actor.getClass().isMobile(actor))
-            return false; // Don't bother with immobile creatures
-
         // get or create temporary storage
         AiWanderStorage& storage = state.get<AiWanderStorage>();
diff -U2 -r /var/lib/copr-rpmbuild/results/openmw-git/upstream-unpacked/Source0/openmw-master/components/nifosg/particle.cpp /var/lib/copr-rpmbuild/results/openmw-git/srpm-unpacked/openmw-master.tar.bz2-extract/openmw-master/components/nifosg/particle.cpp
--- /var/lib/copr-rpmbuild/results/openmw-git/upstream-unpacked/Source0/openmw-master/components/nifosg/particle.cpp	2026-06-29 00:03:31.000000000 +0000
+++ /var/lib/copr-rpmbuild/results/openmw-git/srpm-unpacked/openmw-master.tar.bz2-extract/openmw-master/components/nifosg/particle.cpp	2026-06-28 00:21:35.000000000 +0000
@@ -646,15 +646,12 @@
     void PlanarCollider::operate(osgParticle::Particle* particle, double dt)
     {
-        const osg::Vec3 normal = mPlaneInParticleSpace.getNormal();
-
         // Does the particle in question move towards the collider?
-        float distToPlane = mPlaneInParticleSpace.distance(particle->getPosition());
-        float velDotProduct = particle->getVelocity() * normal;
-        if (distToPlane * velDotProduct >= 0.0f)
+        float velDotProduct = particle->getVelocity() * mPlaneInParticleSpace.getNormal();
+        if (velDotProduct <= 0)
             return;
 
-        // Would it cross the collider?
-        float nextDistToPlane = distToPlane + velDotProduct * static_cast<float>(dt);
-        if (distToPlane * nextDistToPlane > 0.0f)
+        // Does it intersect the collider's plane?
+        osg::BoundingSphere bs(particle->getPosition(), 0.f);
+        if (mPlaneInParticleSpace.intersect(bs) != 1)
             return;
 
@@ -669,5 +666,5 @@
 
         // Deflect the particle
-        osg::Vec3 reflectedVelocity = particle->getVelocity() - normal * (2 * velDotProduct);
+        osg::Vec3 reflectedVelocity = particle->getVelocity() - mPlaneInParticleSpace.getNormal() * (2 * velDotProduct);
         reflectedVelocity *= mBounceFactor;
         particle->setVelocity(reflectedVelocity);