[NEED HELP] Multiplayer server listed twice - causes glitchy play

When I go to the Multiplayer window one of the servers which I often play on has a double listing for the last few weeks.  Specifically, TheRegulars server.  It's a listing for the same server appearing twice.  Everything is identical between the two except the ping is slightly different (yes, same players, same map, etc. it's the same server).  When I try to play it, all seems fine, but every minute or two it glitches and I glitch through a wall or stutter etc.  Anyway to fix this?  I get the feeling I need to delete the data from some folder/file containing the server info to allow it to reset or something.
0.8.2autobuild / mac / sierra

Darn, nobody knows the answer to this problem?

Man... not much point in these forums for getting help...

QuakeNet: #xonotic

Try there.

I'll try.  It disappeared for about a week, so I thought it fixed itself.  Then it came back again.