At a guess, you most likely didn't fix enough after bleaching and before toning. I use a freshly mixed fix after bleaching, and dispose of this fixer after use because of the residual ferri. The size of the silver particles in the bleached area would be smaller and so a shift to warm in the bleached section might be expected, but I have never seen this using Ilford, Kodak or Agfa papers and Dektol.
I have traced strange spotting/toning/staining with selenium to using a fixer that is less than pristine. It seems the disolved silver in the fix stays in the paper. My work flow is:
Develop
Stop
1 st fix
Water holding bath
Discard work prints and test strips, continue with prints that are to be finished:
2 nd fix
If bleaching
Farmer's reducer (aka ferri)
Fix, fixer discarded after all bleaching is done
water holding bath if lots of prints are being done
If toning
Fix in pristine fixer
HCA
Wash
Test for residual fixer and residual silver
Water holding bath if needed
Tone
Rinse
Water holding bath if needed
Fix in the not-so-pristine fixer and discard this fix after all prints are processed
Rinse
HCA
Wash
Residual fixer test, makes sure the HCA is active
Pakosol
Dry
Most of the wet time in making prints is in the steps following the usual develop/fix process. If this work flow is used with RC paper then make the print with wide borders so you can trim away the inevitable edge damage.
I skip steps if they are redundant - if the 2nd fix is fresh and I am not bleaching then there isn't an extra fix step before toning - and such like.