Been having some major issues trying to get flats working with Live Stacking. Not sure if this is bug in SC or bug in me. The big conundrum is when applying flat frames, created in SC with the "Capture Flat" tool, too Live Stack the defects such as vignetting and dust bunnies are made worse not better.
Using the flats tool i'm using 25 frames to make the master flat. I've tried creating flats with bias subtraction checked and unchecked. All flats are using the monochrome feature since i'm using a color camera. Using the tool I've tried making flats with lowest percentage histogram. Just when the flats tools reports "OK." Also put white channel in the middle of histogram and as far over to the right side without clipping any channels.
Using an LED tracing pad with T-shirt diffuser
RC6, AP CCDT67 reducer, ASI294MC Pro Camera Since the reducer allows variable back focus current spacing is setup to provide .757 reduction for FL of 1036 mm (native FL is 1368)
Below are images created in Live Stack with and without master flat applied.

Master Flat Frame max histogram without clipping right side

19 x 15 sec no flat applied

19 x 15 sec with above flat applied
Live stack using sigma clipping, align frames, no enhancement, histogram auto stretch, AWB. Display histogram auto stretch
Tired with and without dark frames (dark frames are working as intended)
I've tried various master flats and all have the same result. So is this a bug or am i bugged? Am I expecting too much from flats or is this normal? I've included the log for SC below.
First encountered this on my main imaging PC. To rule the PC out the images above were captured on a different PC with fresh installation of SC 3.2.5871.0
-Wikkett