is this a glitch or what? (spoiler)
 

ok now i gathered all 3 remaining jedi masters and went to dantooine

now no matter what i chose in the conversation in the end i release electric storm and kill them (even though i didn't chose this and i submit to the judjment etc... ) and also i have full light side meter

then kreia says i failed her etc ....

so is this a glitch or this is how it plays out no matter my choices ??

Kreia always kills the Masters unless you choose to kill them on the planet they're on, if playing dark side. The electric storm you're seeing is Kreia stripping them of the force, thus killing them.

thanks for the answer