Why not fix the MIG27K bug that cannot lock on ground targets soon? Is MIG27K deliberately weakened?

Why not fix the MIG27K bug that cannot lock on ground targets soon? Is MIG27K deliberately weakened?

the radars of Soviet air defense vehicles cannot be folded and stowed, is it because BVVD wants to make Soviet air defense vehicles easier to detect and destroy?

it’s for all Anti air radars