hmm, just tested with a new game, still having the same problems.
I'm running the game from steam, I'll try to describe my observations.
when editing atk/def bonus: strength goes to 0, atk remains unchanged, def changes apply.
melee attack and melee defense both work in game, but the values in the editor go like this: when editing melee attack, melee attack changes to 0, value applies to melee defense.
when editing katana: katana value remains unchanged, changes applies to sabres, both in game and as shown in editor
when editing sabres: sabres value remains unchanged, changes applies to hahckers, both in game and as shown in editor
when editing science: science value remains unchanged, changes applies to labouring, both in game and as shown in editor
when editing labouring: labouring value remains unchanged, changes applies to katana, both in game and as shown in editor
when editing engineer: engineer value remains unchanged, changes applies to weaponsmith, both in game and as shown in editor
when editing weaponsmith: weaponsmith value remains unchanged, changes applies to armorsmith, both in game and as shown in editor
other options in editors currently isn't functioning for me
it could be just me, perhaps I'll wait for the next update since it's still in alpha and the 6.10 trainer works well enough but these are my observations 😵