Rog,
That just sounds like there was another aircraft following your route?
Red ring (other colours available ) will always be centred on your aircraft.
There's definitely a pattern of this issue because it happened to me today from Lee on Solent back to Sandy. In the circuit I noticed that GAWPW was above and behind me, but ‘stuck’ a constant distance behind, and apparently flying backwards!
En route realised that there was GMISJ, GKEVH and GCECL also stuck. GCECL was one of our group and according to my pilot aware he was flying through Southampton’s airspace at 0mph but 4000’ up.
GCECL eventually disappeared but I gained GCKDE.
Some screen shots and traffic captures below. Interestingly GCIJO and GCIGG are both appearing as zero km away, they were flying with me but not that closely! GCECL who was also with us is reported as 52km away.
When I finished the flight I turned off paw then turned it on again to download the track file; but found that nothing had been saved from this flight. Prior two flights today both logged ok.
Geoffrey
Ps: unable to upload the photos as they were too big, and after I’d shrunk them I found that the forum wouldn’t allow .jpeg uploads, only .jpg.
Here they are therefore in Dropbox
https://www.dropbox.com/sh/rdnh4tuol2c8rny/AABF7_YMw8MHrZeq9UxVUDoma?dl=0