The MySQL has been fixed. Update the version check to enforce the correct patch level.

lib/reporting_engine/engine.rb

@@ -14,12 +14,20 @@ module ReportingEngine
       connection = ActiveRecord::Base.connection
       adapter_name = connection.adapter_name.to_s.downcase.to_sym
       if [:mysql, :mysql2].include?(adapter_name)
+        # The reporting engine is incompatible with the
+        # following mysql versions due to a bug in MySQL itself:
+        # 5.6.0 - 5.6.12
+        # 5.7.0 - 5.7.1
+        # see https://www.openproject.org/issues/967 for details.
+        required_patch_levels = { "5.6" => 13, "5.7" => 2 }
+
         mysql_version = connection.show_variable("VERSION")
-        if  mysql_version.start_with?("5.6")
-          # The reporting engine is not compatible with mysql version 5.6
-          # due to a bug in MySQL itself.
-          # see https://www.openproject.org/issues/967 for details.
-          raise "MySQL 5.6 is not yet supported."
+        release_version, patch_level = mysql_version.match(/(\d*\.\d*)\.(\d*)/).captures
+        required_patch_level = required_patch_levels[release_version]
+
+        if required_patch_level && (patch_level.to_i < required_patch_level)
+          raise "MySQL #{mysql_version} is not supported. Version #{release_version} \
+                 requires patch level >= #{required_patch_level}."
         end
       end
     end