That's... odd. Edge is supposed to be excluded from that calculation. Will investigate.
Edit: can't replicate it in the current nightly build for priority or karmagen.
I'm using 0.5.178, which is the latest version I can find (please tell me if there's a newer one?) and it even lists "Fixed a calculation issue for the Edge attribute when using Sum-To-Ten or Priority." in the patchnotes.
But the issue most certainly appears for me.
After doing some more testing:
-I use sum-to-ten for all my characters.
-character Race does not matter
-It happens in 'create' mode. Did not test 'career' mode
-It happens any time the character spends Karma to raise Edge, sometimes even without cyberware installed. (depends on exact priority configuration)
From what I can tell, Chummer miscalculates the current/new EDGE values ONLY for the actual Karma expenditure. The sidebar entry "Special Attributes" lists the correct values.