It's normal for new Fighter (that just quite recently start its operational service) to has some problems on it that need to be iron out.
TFX too, no guarantee it will be problem free later in its initial service.
@urban mine , Do you know Boramae combat range with internal fuel alone and in almost clean configuration?
How is it compare to F35 (in term of combat range)?
not the latest Radar, Eo, etc ?
could you tell us where you get this information?
So Korea will develope downgrade version of their Radar, RF jammer, EOTGP, etc for Indonesia or export version?
and about engine blade, they are hidden:
Ask this to the one who handle negotiation back in SBY administration. They were the one who signed the clause that 4 "teknologi inti" won't be included in ToT.