Destroyers getting "stuck" to you

I'm so sick of this glitch! Often during a campaign I've had a destroyer come within maybe 20km or so of me, without detecting me whatsoever, however they get "stuck" in a full rudder tight circle at a constant ~10km distance for days, or even months.

When I say stuck, I mean it...they stay at that constant distance even if I go towards them or away from them.

I can surface and enter TC while traveling, it doesn't matter. For weeks ingame the destroyer is still there at the same distance when I go back to periscope depth to check sound contacts.

Just now I had a few destroyers "stuck" out there 10km from me while I attacked an unescorted convoy at night. While finishing off some ships with the deck gun, the destroyers that had been stuck for about a month appear on the horizon out of nowhere full steam to help the convoy. They had absolutely no business being there in mid Atlantic if it wasn't for the glitch. I hope this gets fixed in the patch, or that someone can correct it in a mod if not.

end of rant.