HELP! Track or parts of it disappear when zooming or doing map redraw.

[Pointaero]

Track displays fine until I zoom in or, especially out and the map redraws.  The last 20 minutes or so of the track disappear and the app draws a line between a point earlier recorded and straight to the cursor. It then continues to record the track until the map is zoomed again.  The track is lost for good.  When exporting to a KMZ the track is displayed (on Google earth) the same as on Oruxmaps- with those track parts gone.  I've tried numerous setting changes (GPS source fusion on-off, internal or external GPS, changes in track recording, etc.) and nothing has helped.  It's making Oruxmaps useless.

Has anyone else had this issue and what did you do to get rid of it?