FIX: makes dropdown use absolute positioning (#185)

FIX: makes dropdown use absolute positioning (#185)

diff --git a/assets/javascripts/discourse/templates/modal/assign-user.hbs b/assets/javascripts/discourse/templates/modal/assign-user.hbs
index 33752de..4986965 100644
--- a/assets/javascripts/discourse/templates/modal/assign-user.hbs
+++ b/assets/javascripts/discourse/templates/modal/assign-user.hbs
@@ -6,6 +6,7 @@
       value=model.username
       onChange=(action "assignUsername")
       options=(hash
+        placementStrategy="absolute"
         filterPlaceholder=placeholderKey
         includeGroups=false
         groupMembersOf=allowedGroups

GitHub sha: a8495e9d7a260664074c0195b0f8cccd54b038e7

This commit appears in #185 which was approved by CvX. It was merged by jjaffeux.