Hi Ron
Its a bit of Polar Alignment and a bit of the delta calculation.
I did a solve at the pole and saved the image. Converted to JPEG to attach
The solve coordinates look reasonable. My home position is not perfect and there is some cone error so some difference, especially in RA so close to the pole, is expected.
Bing close to the pole the solution coords are about 12h different from scope coords due to pier side.
But the calculated delta for RA is 323952" which is 90 degrees or 6 hours in RA
Using the polar alignment tool at the same place in Manual mode gives roughly the same solver result (difference due to normal sky rotation) but it then asks to move the mount 319680 DEGREEs rather than seconds. Even though I left the slew angle at 30 degrees.
I then performed a PA with auto slewing set to 15 degrees:
After the initial solve as part of PA it got delta RA of 622876" (173 deg, 11.53h) and delta Dec -324189" (-90 deg)
It correctly logged that it would rotate to RA 21h 56m from the telescope currrent RA of 22h 56m which is 15 degrees west as expected
I stopped the proces after it had slewed more than about 45 degrees and it reparked the mount.
After parking I did another solve but now the telescope coords had an RA of 11h (i.e pierside was now different from before - maybe just due to passage of time) and a delta RA of 354857" (98 deg, 6.57h)
So in a nutshell the solver is returning the correct coords at image center
The delta calculation is doing strange things in RA
I think the message from Polar Align with manual slew is a bit of a red herring. It is a log message so the user can slew any amount they want to.
The Polar align with auto slew is really making a mess of both RA and Dec deltas and slewing some indeterminate amount. I had thought it was using the same bit of code as the solving process but apparently not.