Last week the Dutch newspaper NRC revealed a fight between Juncker and Malmström over ISDS. The article (paywall) sketched the context: uninformed activists gaining influence. The article suggested Juncker without good reason giving in.
As Juncker does not gain anything with this leak about the fight, I assume proponents of ISDS leaked, and had the ear of the reporter, so they could sketch the context. The newspaper did not give civil society a rebuttal: very bad journalism, endangering our democracy.
Vrijschrift reaction, in Dutch, the NRC did not want to publish.
See also the Statement of Concern about Planned Provisions on Investment Protection and Investor-State Dispute Settlement (ISDS) in the Transatlantic Trade and Investment Partnership (TTIP) published by over 110 scientists.