From the first link you provided:
But Kiev’s insistence that the law should come into force only when elections are held in the eastern territories under Ukrainian jurisdiction drew immediate criticism from Russia, whose forces Kiev says are arming and backing the rebels.
Russian Foreign Minister Sergei Lavrov, speaking in Moscow, said the law was a “sharp departure from the Minsk agreements” because it tied “special status” to elections in which the self-declared rebel leaders would not take part.
Separatist leaders also criticized the law. “All the questions which the Kiev parliament considered today completely contradict the Minsk agreements,” a separatist official, Alexei Karyakin, was quoted as saying by the Russian news agency RIA Novosti. He said Kiev planned “new bloodshed”.
Yes, the Russians objected because the vote would not take place under Russian military occupation. The main point, the law would have gone into effect if the Russians left and a vote were allowed to take place under proper Ukrainian jurisdiction. N.B., all that was required was an election, not a favorable result in that election.