SimCity Buildit train track glitch

My train tracks recently started to glitch in Frosty Fjords and Capital City maps. It happens when the tracks run parallel to the mountains. Tracks appear to go into the mountains and then disappear. Sometimes the glitch is purely visual, but other times it breaks the connection of tracks to the station. Currently, I have a station that is idle because there are no tracks connected to the station, which is false.